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339747 | https://en.wikipedia.org/wiki/Gutta-percha | Gutta-percha | Gutta-percha is a tree of the genus Palaquium in the family Sapotaceae, which is primarily used to create a high-quality latex of the same name. The material is rigid, naturally biologically inert, resilient, electrically nonconductive, and thermoplastic, most commonly sourced from Palaquium gutta; it is a polymer of i... | Technology | Materials | null |
339838 | https://en.wikipedia.org/wiki/Molecular%20genetics | Molecular genetics | Molecular genetics is a branch of biology that addresses how differences in the structures or expression of DNA molecules manifests as variation among organisms. Molecular genetics often applies an "investigative approach" to determine the structure and/or function of genes in an organism's genome using genetic screen... | Biology and health sciences | Genetics | Biology |
339887 | https://en.wikipedia.org/wiki/Theridiidae | Theridiidae | Theridiidae, also known as the tangle-web spiders, cobweb spiders and comb-footed spiders, is a large family of araneomorph spiders first described by Carl Jakob Sundevall in 1833. This diverse, globally distributed family includes over 3,000 species in 124 genera, and is the most common arthropod found in human dwelli... | Biology and health sciences | Spiders | Animals |
340167 | https://en.wikipedia.org/wiki/Giant%20anteater | Giant anteater | The giant anteater (Myrmecophaga tridactyla) is an insectivorous mammal native to Central and South America. It is one of four living species of anteaters, of which it is the largest member. The only extant member of the genus Myrmecophaga, it is classified with sloths in the order Pilosa. This species is mostly terres... | Biology and health sciences | Xenarthra | Animals |
340240 | https://en.wikipedia.org/wiki/Partition%20of%20a%20set | Partition of a set | In mathematics, a partition of a set is a grouping of its elements into non-empty subsets, in such a way that every element is included in exactly one subset.
Every equivalence relation on a set defines a partition of this set, and every partition defines an equivalence relation. A set equipped with an equivalence rel... | Mathematics | Set theory | null |
340421 | https://en.wikipedia.org/wiki/Tagetes | Tagetes | Tagetes () is a genus of 50 species of annual or perennial, mostly herbaceous plants in the family Asteraceae. They are among several groups of plants known in English as marigolds. The genus Tagetes was described by Carl Linnaeus in 1753.
Originally called cempōhualxōchitl, by the Nahua peoples, these plants are nat... | Biology and health sciences | Asterales | null |
340602 | https://en.wikipedia.org/wiki/Zinnia | Zinnia | Zinnia is a genus of plants of the tribe Heliantheae within the family Asteraceae. They are native to scrub and dry grassland in an area stretching from the Southwestern United States to South America, with a centre of diversity in Mexico. Members of the genus are notable for their solitary long-stemmed 12 petal flow... | Biology and health sciences | Asterales | Plants |
340651 | https://en.wikipedia.org/wiki/Eurasian%20plate | Eurasian plate | The Eurasian plate is a tectonic plate that includes most of Eurasia (a landmass consisting of the traditional continents of Asia and Europe), with the notable exceptions of the Arabian Peninsula, the Indian subcontinent, and the area east of the Chersky Range in eastern Siberia. It also includes oceanic crust extendin... | Physical sciences | Tectonic plates | Earth science |
340757 | https://en.wikipedia.org/wiki/Internal%20energy | Internal energy | The internal energy of a thermodynamic system is the energy of the system as a state function, measured as the quantity of energy necessary to bring the system from its standard internal state to its present internal state of interest, accounting for the gains and losses of energy due to changes in its internal state, ... | Physical sciences | Thermodynamics | null |
340982 | https://en.wikipedia.org/wiki/Petrology | Petrology | Petrology () is the branch of geology that studies rocks, their mineralogy, composition, texture, structure and the conditions under which they form. Petrology has three subdivisions: igneous, metamorphic, and sedimentary petrology. Igneous and metamorphic petrology are commonly taught together because both make heavy ... | Physical sciences | Petrology | null |
341046 | https://en.wikipedia.org/wiki/Green%20algae | Green algae | The green algae (: green alga) are a group of chlorophyll-containing autotrophic eukaryotes consisting of the phylum Prasinodermophyta and its unnamed sister group that contains the Chlorophyta and Charophyta/Streptophyta. The land plants (Embryophytes) have emerged deep within the charophytes as a sister of the Zygnem... | Biology and health sciences | Green algae | null |
341265 | https://en.wikipedia.org/wiki/Jungle | Jungle | A jungle is land covered with dense forest and tangled vegetation, usually in tropical climates. Application of the term has varied greatly during the past century.
Etymology
The word jungle originates from the Sanskrit word jaṅgala (), meaning rough and arid. It came into the English language in the 18th century via ... | Physical sciences | Forests | null |
341287 | https://en.wikipedia.org/wiki/Smoke%20detector | Smoke detector | A smoke detector is a device that senses smoke, typically as an indicator of fire. Smoke detectors/alarms are usually housed in plastic enclosures, typically shaped like a disk about in diameter and thick, but shape and size vary. Smoke can be detected either optically (photoelectric) or by physical process (ionizati... | Technology | Fire protection | null |
341442 | https://en.wikipedia.org/wiki/Cantor%27s%20theorem | Cantor's theorem | In mathematical set theory, Cantor's theorem is a fundamental result which states that, for any set , the set of all subsets of known as the power set of has a strictly greater cardinality than itself.
For finite sets, Cantor's theorem can be seen to be true by simple enumeration of the number of subsets. Counting... | Mathematics | Discrete mathematics | null |
341482 | https://en.wikipedia.org/wiki/L%C3%B6wenheim%E2%80%93Skolem%20theorem | Löwenheim–Skolem theorem | In mathematical logic, the Löwenheim–Skolem theorem is a theorem on the existence and cardinality of models, named after Leopold Löwenheim and Thoralf Skolem.
The precise formulation is given below. It implies that if a countable first-order theory has an infinite model, then for every infinite cardinal number κ it ha... | Mathematics | Model theory | null |
341566 | https://en.wikipedia.org/wiki/Halite | Halite | Halite ( ), commonly known as rock salt, is a type of salt, the mineral (natural) form of sodium chloride (NaCl). Halite forms isometric crystals. The mineral is typically colorless or white, but may also be light blue, dark blue, purple, pink, red, orange, yellow or gray depending on inclusion of other materials, impu... | Physical sciences | Minerals | Earth science |
600841 | https://en.wikipedia.org/wiki/Abies%20balsamea | Abies balsamea | Abies balsamea or balsam fir is a North American fir, native to most of eastern and central Canada (Newfoundland west to central Alberta) and the northeastern United States (Minnesota east to Maine, and south in the Appalachian Mountains to West Virginia).
Description
Balsam fir is a small to medium-size evergreen tr... | Biology and health sciences | Pinaceae | Plants |
601958 | https://en.wikipedia.org/wiki/Process%20engineering | Process engineering | Process engineering is the understanding and application of the fundamental principles and laws of nature that allow humans to transform raw material and energy into products that are useful to society, at an industrial level. By taking advantage of the driving forces of nature such as pressure, temperature and concent... | Technology | Disciplines | null |
602700 | https://en.wikipedia.org/wiki/Imago | Imago | In biology, the imago (Latin for "image") is the last stage an insect attains during its metamorphosis, its process of growth and development; it is also called the imaginal stage ("imaginal" being "imago" in adjective form), the stage in which the insect attains maturity. It follows the final ecdysis of the immature i... | Biology and health sciences | Animal ontogeny | null |
16161443 | https://en.wikipedia.org/wiki/IOS | IOS | iOS (formerly iPhone OS) is a mobile operating system developed by Apple exclusively for its mobile devices. It was unveiled in January 2007 for the first-generation iPhone, which launched in June 2007. Major versions of iOS are released annually; the current stable version, iOS 18, was released to the public on Septem... | Technology | Operating Systems | null |
16163668 | https://en.wikipedia.org/wiki/Avulsion%20injury | Avulsion injury | In medicine, an avulsion is an injury in which a body structure is torn off by either trauma or surgery (from the Latin avellere, meaning "to tear off"). The term most commonly refers to a surface trauma where all layers of the skin have been torn away, exposing the underlying structures (i.e., subcutaneous tissue, mus... | Biology and health sciences | Types | Health |
3060044 | https://en.wikipedia.org/wiki/Process%20design | Process design | In chemical engineering, process design is the choice and sequencing of units for desired physical and/or chemical transformation of materials. Process design is central to chemical engineering, and it can be considered to be the summit of that field, bringing together all of the field's components.
Process design can... | Physical sciences | Chemical engineering | Chemistry |
1572073 | https://en.wikipedia.org/wiki/Volcanic%20plug | Volcanic plug | A volcanic plug, also called a volcanic neck or lava neck, is a volcanic object created when magma hardens within a vent on an active volcano. When present, a plug can cause an extreme build-up of high gas pressure if rising volatile-charged magma is trapped beneath it, and this can sometimes lead to an explosive erupt... | Physical sciences | Volcanology | Earth science |
1572904 | https://en.wikipedia.org/wiki/Mecoptera | Mecoptera | Mecoptera (from the Greek: mecos = "long", ptera = "wings") is an order of insects in the superorder Holometabola with about six hundred species in nine families worldwide. Mecopterans are sometimes called scorpionflies after their largest family, Panorpidae, in which the males have enlarged genitals raised over the bo... | Biology and health sciences | Insects: General | Animals |
1572944 | https://en.wikipedia.org/wiki/1%2C4-Dioxane | 1,4-Dioxane | 1,4-Dioxane () is a heterocyclic organic compound, classified as an ether. It is a colorless liquid with a faint sweet odor similar to that of diethyl ether. The compound is often called simply dioxane because the other dioxane isomers (1,2- and 1,3-) are rarely encountered.
Dioxane is used as a solvent for a variety... | Physical sciences | Esters and ethers | Chemistry |
1573393 | https://en.wikipedia.org/wiki/Conversion%20%28chemistry%29 | Conversion (chemistry) | Conversion and its related terms yield and selectivity are important terms in chemical reaction engineering. They are described as ratios of how much of a reactant has reacted (X — conversion, normally between zero and one), how much of a desired product was formed (Y — yield, normally also between zero and one) and ho... | Physical sciences | Reaction | Chemistry |
1574190 | https://en.wikipedia.org/wiki/Ornithomimosauria | Ornithomimosauria | Ornithomimosauria ("bird-mimic lizards") are theropod dinosaurs which bore a superficial resemblance to the modern-day ostrich. They were fast, omnivorous or herbivorous dinosaurs from the Cretaceous Period of Laurasia (now Asia, Europe and North America), as well as Africa and possibly Australia. The group first appea... | Biology and health sciences | Theropods | Animals |
1574221 | https://en.wikipedia.org/wiki/Tanystropheus | Tanystropheus | Tanystropheus (~ 'long' + 'hinged') is an extinct genus of archosauromorph reptile which lived during the Triassic Period in Europe, Asia, and North America. It is recognisable by its extremely elongated neck, longer than the torso and tail combined. The neck was composed of 13 vertebrae strengthened by extensive cerv... | Biology and health sciences | Other prehistoric reptiles | Animals |
1574901 | https://en.wikipedia.org/wiki/Cardinality%20of%20the%20continuum | Cardinality of the continuum | In set theory, the cardinality of the continuum is the cardinality or "size" of the set of real numbers , sometimes called the continuum. It is an infinite cardinal number and is denoted by (lowercase Fraktur "c") or
The real numbers are more numerous than the natural numbers . Moreover, has the same number of ele... | Mathematics | Set theory | null |
1575168 | https://en.wikipedia.org/wiki/Subgiant | Subgiant | A subgiant is a star that is brighter than a normal main-sequence star of the same spectral class, but not as bright as giant stars. The term subgiant is applied both to a particular spectral luminosity class and to a stage in the evolution of a star.
Yerkes luminosity class IV
The term subgiant was first used in 193... | Physical sciences | Stellar astronomy | Astronomy |
1575341 | https://en.wikipedia.org/wiki/Dexter%20cattle | Dexter cattle | The Dexter is an Irish breed of small cattle. It originated in the eighteenth century in County Kerry, in south-western Ireland, and appears to be named after a man named Dexter, who was factor of the estates of Lord Hawarden on Valentia Island. Until the second half of the nineteenth century it was considered a type w... | Biology and health sciences | Miniature cattle | Animals |
1575447 | https://en.wikipedia.org/wiki/Shear%20modulus | Shear modulus | In materials science, shear modulus or modulus of rigidity, denoted by G, or sometimes S or μ, is a measure of the elastic shear stiffness of a material and is defined as the ratio of shear stress to the shear strain:
where
= shear stress
is the force which acts
is the area on which the force acts
= shear strain.... | Physical sciences | Solid mechanics | Physics |
10952778 | https://en.wikipedia.org/wiki/Poecilotheria%20metallica | Poecilotheria metallica | Poecilotheria metallica, also known as the peacock tarantula, is an Old World species of tarantula. It is the only blue species of the genus Poecilotheria. Like others in its genus it exhibits an intricate fractal-like pattern on the abdomen. The species' natural habitat is deciduous forest in Andhra Pradesh, in cent... | Biology and health sciences | Spiders | Animals |
2217590 | https://en.wikipedia.org/wiki/Choristodera | Choristodera | Choristodera (from the Greek χωριστός chōristos + δέρη dérē, 'separated neck') is an extinct order of semiaquatic diapsid reptiles that ranged from the Middle Jurassic, or possibly Triassic, to the Miocene (168 to 20 or possibly 11.6 million years ago). Choristoderes are morphologically diverse, with the best known mem... | Biology and health sciences | Choristoderes | Animals |
2217676 | https://en.wikipedia.org/wiki/Side-striped%20jackal | Side-striped jackal | The side-striped jackal (Lupulella adusta or Schaeffia adusta) is a canine native to Central and Southern Africa.
Unlike the smaller and related black-backed jackal (Lupulella mesomelas), which dwells in open plains, the side-striped jackal primarily dwells in woodland and scrub areas.
Taxonomy and evolution
The Swe... | Biology and health sciences | Canines | Animals |
2217890 | https://en.wikipedia.org/wiki/Sulfide%20mineral | Sulfide mineral | The sulphide minerals are a class of minerals containing sulphide (S2−) or disulphide () as the major anion. Some sulfide minerals are economically important as metal ores. The sulphide class also includes the selenides, the tellurides, the arsenides, the antimonides, the bismuthinides, the sulpharsenides and the sulph... | Physical sciences | Minerals | Earth science |
2221187 | https://en.wikipedia.org/wiki/Solid%20solution | Solid solution | A solid solution, a term popularly used for metals, is a homogeneous mixture of two compounds in solid state and having a single crystal structure. Many examples can be found in metallurgy, geology, and solid-state chemistry. The word "solution" is used to describe the intimate mixing of components at the atomic level ... | Physical sciences | Mixture | Chemistry |
2221992 | https://en.wikipedia.org/wiki/Lystrosaurus | Lystrosaurus | Lystrosaurus (; 'shovel lizard'; proper Ancient Greek is lístron ‘tool for leveling or smoothing, shovel, spade, hoe’) is an extinct genus of herbivorous dicynodont therapsids from the late Permian and Early Triassic epochs (around 248 million years ago). It lived in what is now Antarctica, India, China, Mongolia, Eur... | Biology and health sciences | Proto-mammals | Animals |
8786647 | https://en.wikipedia.org/wiki/Cash%20%28unit%29 | Cash (unit) | Cash or li () is a traditional Chinese unit of weight.
The terms "cash" or "le" were documented to have been used by British explorers in the 1830s when trading in Qing territories of China.
Under the Hong Kong statute of the Weights and Measures Ordinance, 1 cash is about . Currently, it is candareen or catty, nam... | Physical sciences | Chinese | Basics and measurement |
5589071 | https://en.wikipedia.org/wiki/Titanis | Titanis | Titanis (meaning "Titan" for the Titans of Greek mythology) is a genus of phorusrhacid ("terror birds", a group originating in South America), an extinct family of large, predatory birds, in the order Cariamiformes that inhabited the United States during the Pliocene and earliest Pleistocene. The first fossils were une... | Biology and health sciences | Prehistoric birds | Animals |
5589338 | https://en.wikipedia.org/wiki/Summer%20squash | Summer squash | Summer squash are squashes that are harvested when immature, while the rind is still tender and edible. Most summer squashes are varieties of Cucurbita pepo, though some are C. moschata. Most summer squash have a bushy growth habit, unlike the rambling vines of many winter squashes. The term "summer squash" refers to t... | Biology and health sciences | Botanical fruits used as culinary vegetables | Plants |
9460040 | https://en.wikipedia.org/wiki/Lyman-alpha%20emitter | Lyman-alpha emitter | A Lyman-alpha emitter (LAE) is a type of distant galaxy that emits Lyman-alpha radiation from neutral hydrogen.
Most known LAEs are extremely distant, and because of the finite travel time of light they provide glimpses into the history of the universe. They are thought to be the progenitors of most modern Milky Way t... | Physical sciences | Galaxy classification | Astronomy |
9462241 | https://en.wikipedia.org/wiki/Dropline | Dropline | A dropline is a commercial fishing rig consisting of a long fishing line set vertically down into the water, with a series of baited hooks attached to the ends of side-branching secondary lines called snoods. Dropline fishing, or droplining, is a specialized angling technique.
Droplines may be set either down underwat... | Technology | Hunting and fishing | null |
9464988 | https://en.wikipedia.org/wiki/Land%20transport | Land transport | Land transport is the transport or movement of people, animals or goods from one location to another location on land. This is in contrast with other main types of transport such as maritime transport and aviation. The two main forms of land transport can be considered to be rail transport and road transport.
Systems
... | Technology | Concepts of ground transport | null |
9467014 | https://en.wikipedia.org/wiki/Crested%20caracara | Crested caracara | The crested caracara (Caracara plancus), also known as the Mexican eagle, is a bird of prey (raptor) in the falcon family, Falconidae. It was formerly placed in the genus Polyborus before being given in its own genus, Caracara. It is native to and found in the southern and southeastern United States, Mexico (where it i... | Biology and health sciences | Accipitrimorphae | Animals |
1014565 | https://en.wikipedia.org/wiki/Grande%20Dixence%20Dam | Grande Dixence Dam | The Grande Dixence Dam () is a concrete gravity dam on the Dixence at the head of the Val d'Hérémence in the canton of Valais in Switzerland. At high, it is the tallest gravity dam in the world, seventh tallest dam overall, and the tallest dam in Europe. It is part of the Cleuson-Dixence Complex. With the primary purp... | Technology | Dams | null |
1014590 | https://en.wikipedia.org/wiki/Cannabis%20sativa | Cannabis sativa | Cannabis sativa is an annual herbaceous flowering plant. The species was first classified by Carl Linnaeus in 1753. The specific epithet sativa means 'cultivated'. Indigenous to Eastern Asia, the plant is now of cosmopolitan distribution due to widespread cultivation. It has been cultivated throughout recorded history ... | Biology and health sciences | Rosales | Plants |
1015846 | https://en.wikipedia.org/wiki/Mannitol | Mannitol | Mannitol is a type of sugar alcohol used as a sweetener and medication. It is used as a low calorie sweetener as it is poorly absorbed by the intestines. As a medication, it is used to decrease pressure in the eyes, as in glaucoma, and to lower increased intracranial pressure. Medically, it is given by injection or inh... | Physical sciences | Sugar alcohols | Chemistry |
1016422 | https://en.wikipedia.org/wiki/Curved%20spacetime | Curved spacetime | In physics, curved spacetime is the mathematical model in which, with Einstein's theory of general relativity, gravity naturally arises, as opposed to being described as a fundamental force in Newton's static Euclidean reference frame. Objects move along geodesics—curved paths determined by the local geometry of spacet... | Physical sciences | Physics basics: General | Physics |
1016523 | https://en.wikipedia.org/wiki/Legionella%20pneumophila | Legionella pneumophila | Legionella pneumophila, the primary causative agent for Legionnaire's disease, is an aerobic, pleomorphic, flagellated, non-spore-forming, Gram-negative bacterium. L. pneumophila is a intracellular parasite that preferentially infects soil amoebae and freshwater protozoa for replication. Due to L. pneumophila’s ability... | Biology and health sciences | Gram-positive bacteria | Plants |
1017709 | https://en.wikipedia.org/wiki/Arrowhead | Arrowhead | An arrowhead or point is the usually sharpened and hardened tip of an arrow, which contributes a majority of the projectile mass and is responsible for impacting and penetrating a target, or sometimes for special purposes such as signaling.
The earliest arrowheads were made of stone and of organic materials; as human ... | Technology | Archery | null |
1018112 | https://en.wikipedia.org/wiki/Cimetidine | Cimetidine | Cimetidine, sold under the brand name Tagamet among others, is a histamine H2 receptor antagonist that inhibits stomach acid production. It is mainly used in the treatment of heartburn and peptic ulcers.
With the development of proton pump inhibitors, such as omeprazole, approved for the same indications, cimetidine i... | Biology and health sciences | Antihistamines | Health |
1018257 | https://en.wikipedia.org/wiki/3-manifold | 3-manifold | In mathematics, a 3-manifold is a topological space that locally looks like a three-dimensional Euclidean space. A 3-manifold can be thought of as a possible shape of the universe. Just as a sphere looks like a plane (a tangent plane) to a small and close enough observer, all 3-manifolds look like our universe does to ... | Mathematics | Topology | null |
4182449 | https://en.wikipedia.org/wiki/Tablet%20computer | Tablet computer | A tablet computer, commonly shortened to tablet, is a mobile device, typically with a mobile operating system and touchscreen display processing circuitry, and a rechargeable battery in a single, thin and flat package. Tablets, being computers, have similar capabilities, but lack some input/output (I/O) abilities that ... | Technology | Computer hardware | null |
4185286 | https://en.wikipedia.org/wiki/Mammaliaformes | Mammaliaformes | Mammaliaformes ("mammalian forms") is a clade of synapsid tetrapods that includes the crown group mammals and their closest extinct relatives; the group radiated from earlier probainognathian cynodonts during the Late Triassic. It is defined as the clade originating from the most recent common ancestor of Morganucodont... | Biology and health sciences | Stem-mammals | Animals |
4186250 | https://en.wikipedia.org/wiki/Veneridae | Veneridae | The Veneridae or venerids, common name: Venus clams, are a very large family of minute to large, saltwater clams, marine bivalve molluscs. Over 500 living species of venerid bivalves are known, most of which are edible, and many of which are exploited as food sources.
Many of the most important edible species are comm... | Biology and health sciences | Bivalvia | Animals |
4189127 | https://en.wikipedia.org/wiki/River%20ecosystem | River ecosystem | River ecosystems are flowing waters that drain the landscape, and include the biotic (living) interactions amongst plants, animals and micro-organisms, as well as abiotic (nonliving) physical and chemical interactions of its many parts. River ecosystems are part of larger watershed networks or catchments, where smaller... | Physical sciences | Hydrology | Earth science |
7282792 | https://en.wikipedia.org/wiki/Shapley%20Supercluster | Shapley Supercluster | The Shapley Supercluster or Shapley Concentration (SCl 124) is the largest concentration of galaxies in our nearby universe that forms a gravitationally interacting unit, thereby pulling itself together instead of expanding with the universe. It appears as a striking overdensity in the distribution of galaxies in the c... | Physical sciences | Notable galaxy clusters | Astronomy |
7286999 | https://en.wikipedia.org/wiki/Common%20house%20gecko | Common house gecko | The common house gecko (Hemidactylus frenatus) is a gecko native to South and Southeast Asia as well as Near Oceania. It is also known as the Asian house gecko, Pacific house gecko, wall gecko, house lizard, tiktiki, chipkali or moon lizard.
These geckos are nocturnal; hiding during the day and foraging for insects at... | Biology and health sciences | Lizards and other Squamata | Animals |
7290120 | https://en.wikipedia.org/wiki/Methods%20of%20detecting%20exoplanets | Methods of detecting exoplanets | Any planet is an extremely faint light source compared to its parent star. For example, a star like the Sun is about a billion times as bright as the reflected light from any of the planets orbiting it. In addition to the intrinsic difficulty of detecting such a faint light source, the light from the parent star causes... | Physical sciences | Planetary science | Astronomy |
16179834 | https://en.wikipedia.org/wiki/Rabies%20vaccine | Rabies vaccine | The rabies vaccine is a vaccine used to prevent rabies. There are several rabies vaccines available that are both safe and effective. Vaccinations must be administered prior to rabies virus exposure or within the latent period after exposure to prevent the disease. Transmission of rabies virus to humans typically occur... | Biology and health sciences | Vaccines | Health |
11940676 | https://en.wikipedia.org/wiki/Eutriconodonta | Eutriconodonta | Eutriconodonta is an order of early mammals. Eutriconodonts existed in Asia (including pre-contact India), Africa, Europe, North and South America during the Jurassic and the Cretaceous periods. The order was named by Kermack et al. in 1973 as a replacement name for the paraphyletic Triconodonta.
Traditionally seen as... | Biology and health sciences | Stem-mammals | Animals |
11941349 | https://en.wikipedia.org/wiki/Residential%20treatment%20center | Residential treatment center | A residential treatment center (RTC), sometimes called a rehab, is a live-in health care facility providing therapy for substance use disorders, mental illness, or other behavioral problems. Residential treatment may be considered the "last-ditch" approach to treating abnormal psychology or psychopathology.
A resident... | Biology and health sciences | Health facilities | Health |
11943108 | https://en.wikipedia.org/wiki/Pinnidae | Pinnidae | The Pinnidae are a taxonomic family of large saltwater clams sometimes known as pen shells. They are marine bivalve molluscs in the order Pteriida.
Shell description
The shells of bivalves in this family are fragile and have a long and triangular shape, and in life the pointed end is anchored in sediment using a byss... | Biology and health sciences | Bivalvia | Animals |
11943863 | https://en.wikipedia.org/wiki/Space%20industry | Space industry | Space industry refers to economic activities related to manufacturing components that go into outer space (Earth's orbit or beyond), delivering them to those regions, and related services. Owing to the prominence of satellite-related activities, some sources use the term satellite industry interchangeably with the term... | Technology | Basics_6 | null |
2222635 | https://en.wikipedia.org/wiki/Atmospheric%20electricity | Atmospheric electricity | Atmospheric electricity describes the electrical charges in the Earth's atmosphere (or that of another planet). The movement of charge between the Earth's surface, the atmosphere, and the ionosphere is known as the global atmospheric electrical circuit. Atmospheric electricity is an interdisciplinary topic with a long ... | Physical sciences | Storms | Earth science |
2223114 | https://en.wikipedia.org/wiki/Baryon%20asymmetry | Baryon asymmetry | In physical cosmology, the baryon asymmetry problem, also known as the matter asymmetry problem or the matter–antimatter asymmetry problem, is the observed imbalance in baryonic matter (the type of matter experienced in everyday life) and antibaryonic matter in the observable universe. Neither the standard model of par... | Physical sciences | Particle physics: General | Physics |
2223535 | https://en.wikipedia.org/wiki/Mass%20flow%20rate | Mass flow rate | In physics and engineering, mass flow rate is the rate at which mass of a substance changes over time. Its unit is kilogram per second (kg/s) in SI units, and slug per second or pound per second in US customary units. The common symbol is (pronounced "m-dot"), although sometimes (Greek lowercase mu) is used.
Somet... | Physical sciences | Fluid mechanics | Physics |
2223903 | https://en.wikipedia.org/wiki/Dermatophytosis | Dermatophytosis | Dermatophytosis, also known as tinea and ringworm, is a fungal infection of the skin (a dermatomycosis), that may affect skin, hair, and nails. Typically it results in a red, itchy, scaly, circular rash. Hair loss may occur in the area affected. Symptoms begin four to fourteen days after exposure. The types of dermatop... | Biology and health sciences | Fungal infections | Health |
2224213 | https://en.wikipedia.org/wiki/English%20units | English units | English units were the units of measurement used in England up to 1826 (when they were replaced by Imperial units), which evolved as a combination of the Anglo-Saxon and Roman systems of units. Various standards have applied to English units at different times, in different places, and for different applications.
Use ... | Physical sciences | Measurement systems | Basics and measurement |
2224886 | https://en.wikipedia.org/wiki/Short-eared%20dog | Short-eared dog | The short-eared dog (Atelocynus microtis), also known as the short-eared zorro or small-eared dog, is a unique and elusive canid species endemic to the Amazonian basin. This is the only species assigned to the genus Atelocynus.
Other names
The short-eared dog has many names in the local languages where it is endemic, ... | Biology and health sciences | Canines | Animals |
2225073 | https://en.wikipedia.org/wiki/Atopic%20dermatitis | Atopic dermatitis | Atopic dermatitis (AD), also known as atopic eczema, is a long-term type of inflammation of the skin. Atopic dermatitis is also often called simply eczema but the same term is also used to refer to dermatitis, the larger group of skin conditions. Atopic dermatitis results in itchy, red, swollen, and cracked skin. Clear... | Biology and health sciences | Specific diseases | Health |
3062954 | https://en.wikipedia.org/wiki/Wheeler%E2%80%93Feynman%20absorber%20theory | Wheeler–Feynman absorber theory | The Wheeler–Feynman absorber theory (also called the Wheeler–Feynman time-symmetric theory), named after its originators, the physicists Richard Feynman and John Archibald Wheeler, is a theory of electrodynamics based on a relativistic correct extension of action at a distance electron particles. The theory postulates ... | Physical sciences | Quantum mechanics | Physics |
3064671 | https://en.wikipedia.org/wiki/Suicide%20intervention | Suicide intervention | Suicide intervention is a direct effort to prevent a person or persons from attempting to take their own life or lives intentionally.
Asking direct questions is a recommended first step in intervention. These questions may include asking about whether a person is having thoughts of suicide, if they have thought about... | Biology and health sciences | Mental disorders | Health |
3066350 | https://en.wikipedia.org/wiki/Microstate%20%28statistical%20mechanics%29 | Microstate (statistical mechanics) | In statistical mechanics, a microstate is a specific configuration of a system that describes the precise positions and momenta of all the individual particles or components that make up the system. Each microstate has a certain probability of occurring during the course of the system's thermal fluctuations.
In contra... | Physical sciences | Statistical mechanics | Physics |
3069677 | https://en.wikipedia.org/wiki/Monkey | Monkey | Monkey is a common name that may refer to most mammals of the infraorder Simiiformes, also known as simians. Traditionally, all animals in the group now known as simians are counted as monkeys except the apes. Thus monkeys, in that sense, constitute an incomplete paraphyletic grouping; however, in the broader sense bas... | Biology and health sciences | Primates | null |
3070481 | https://en.wikipedia.org/wiki/Nat%20%28unit%29 | Nat (unit) | The natural unit of information (symbol: nat), sometimes also nit or nepit, is a unit of information or information entropy, based on natural logarithms and powers of e, rather than the powers of 2 and base 2 logarithms, which define the shannon. This unit is also known by its unit symbol, the nat. One nat is the inf... | Physical sciences | Information | Basics and measurement |
13485805 | https://en.wikipedia.org/wiki/Radio-frequency%20engineering | Radio-frequency engineering | Radio-frequency (RF) engineering is a subset of electrical engineering involving the application of transmission line, waveguide, antenna, radar, and electromagnetic field principles to the design and application of devices that produce or use signals within the radio band, the frequency range of about 20 kHz up to 300... | Technology | Disciplines | null |
1575813 | https://en.wikipedia.org/wiki/Series%20expansion | Series expansion | In mathematics, a series expansion is a technique that expresses a function as an infinite sum, or series, of simpler functions. It is a method for calculating a function that cannot be expressed by just elementary operators (addition, subtraction, multiplication and division).
The resulting so-called series often can... | Mathematics | Basics_2 | null |
1575825 | https://en.wikipedia.org/wiki/Hyperbolic%20partial%20differential%20equation | Hyperbolic partial differential equation | In mathematics, a hyperbolic partial differential equation of order is a partial differential equation (PDE) that, roughly speaking, has a well-posed initial value problem for the first derivatives. More precisely, the Cauchy problem can be locally solved for arbitrary initial data along any non-characteristic hypers... | Mathematics | Differential equations | null |
1576576 | https://en.wikipedia.org/wiki/Coywolf | Coywolf | A coywolf is a canid hybrid descended from coyotes (Canis latrans), eastern wolves (Canis lycaon), gray wolves (Canis lupus), and dogs (Canis familiaris). All of these species are members of the genus Canis with 78 chromosomes; they therefore can interbreed. One genetic study indicates that these species genetically di... | Biology and health sciences | Canines | Animals |
1576696 | https://en.wikipedia.org/wiki/Reaction%20rate%20constant | Reaction rate constant | In chemical kinetics, a reaction rate constant or reaction rate coefficient () is a proportionality constant which quantifies the rate and direction of a chemical reaction by relating it with the concentration of reactants.
For a reaction between reactants A and B to form a product C,
where
A and B are reactants
C is... | Physical sciences | Kinetics | Chemistry |
1576787 | https://en.wikipedia.org/wiki/Allyl%20isothiocyanate | Allyl isothiocyanate | Allyl isothiocyanate (AITC) is a naturally occurring unsaturated isothiocyanate. The colorless oil is responsible for the pungent taste of cruciferous vegetables such as mustard, radish, horseradish, and wasabi. This pungency and the lachrymatory effect of AITC are mediated through the TRPA1 and TRPV1 ion channels. It... | Physical sciences | Concepts: General | Chemistry |
1577330 | https://en.wikipedia.org/wiki/Portia%20%28spider%29 | Portia (spider) | Portia is a genus of jumping spider that feeds on other spiders (i.e., they are araneophagic or arachnophagic). They are remarkable for their intelligent hunting behaviour, which suggests that they are capable of learning and problem solving, traits normally attributed to much larger animals.
Taxonomy and evolution
Th... | Biology and health sciences | Spiders | Animals |
1578728 | https://en.wikipedia.org/wiki/Fancy%20pigeon | Fancy pigeon | Fancy pigeon refers to any breed of domestic pigeon, which is a domesticated form of the wild rock dove (Columba livia). They are bred by pigeon fanciers for various traits relating to size, shape, color, and behavior, and often exhibited at pigeon shows, fairs and other livestock exhibits.
There are about 800 pigeon ... | Biology and health sciences | Pigeons | Animals |
1579423 | https://en.wikipedia.org/wiki/Reaction%20quotient | Reaction quotient | In chemical thermodynamics, the reaction quotient (Qr or just Q) is a dimensionless quantity that provides a measurement of the relative amounts of products and reactants present in a reaction mixture for a reaction with well-defined overall stoichiometry at a particular point in time. Mathematically, it is defined as... | Physical sciences | Thermodynamics | Chemistry |
1580554 | https://en.wikipedia.org/wiki/Tiltmeter | Tiltmeter | A tiltmeter is a sensitive inclinometer designed to measure very small changes from the vertical level, either on the ground or in structures. Tiltmeters are used extensively for monitoring volcanoes, the response of dams to filling, the small movements of potential landslides, the orientation and volume of hydraulic f... | Technology | Surveying tools | null |
5595163 | https://en.wikipedia.org/wiki/Ceres%20%28dwarf%20planet%29 | Ceres (dwarf planet) | Ceres (minor-planet designation: 1 Ceres) is a dwarf planet in the middle main asteroid belt between the orbits of Mars and Jupiter. It was the first known asteroid, discovered on 1 January 1801 by Giuseppe Piazzi at Palermo Astronomical Observatory in Sicily, and announced as a new planet. Ceres was later classified a... | Physical sciences | Solar System | null |
5595777 | https://en.wikipedia.org/wiki/Luminous%20infrared%20galaxy | Luminous infrared galaxy | Luminous infrared galaxies or LIRGs are galaxies with luminosities, the measurement of brightness, above . They are also referred to as submillimeter galaxies (SMGs) through their normal method of detection. LIRGs are more abundant than starburst galaxies, Seyfert galaxies and quasi-stellar objects at comparable lumino... | Physical sciences | Active galactic nucleus | Astronomy |
7300733 | https://en.wikipedia.org/wiki/Hatzegopteryx | Hatzegopteryx | Hatzegopteryx ("Hațeg basin wing") is a genus of azhdarchid pterosaur found in the late Maastrichtian deposits of the Densuş Ciula Formation, an outcropping in Transylvania, Romania. It is known only from the type species, Hatzegopteryx thambema, named by paleontologists Eric Buffetaut, Dan Grigorescu, and Zoltan Csiki... | Biology and health sciences | Pterosaurs | Animals |
8805625 | https://en.wikipedia.org/wiki/Galaxy%20merger | Galaxy merger | Galaxy mergers can occur when two (or more) galaxies collide. They are the most violent type of galaxy interaction. The gravitational interactions between galaxies and the friction between the gas and dust have major effects on the galaxies involved, but the exact effects of such mergers depend on a wide variety of pa... | Physical sciences | Basics_2 | Astronomy |
17429873 | https://en.wikipedia.org/wiki/Focal%20mechanism | Focal mechanism | The focal mechanism of an earthquake describes the deformation in the source region that generates the seismic waves. In the case of a fault-related event, it refers to the orientation of the fault plane that slipped, and the slip vector and is also known as a fault-plane solution. Focal mechanisms are derived from a s... | Physical sciences | Seismology | Earth science |
53879 | https://en.wikipedia.org/wiki/Orogeny | Orogeny | Orogeny () is a mountain-building process that takes place at a convergent plate margin when plate motion compresses the margin. An or develops as the compressed plate crumples and is uplifted to form one or more mountain ranges. This involves a series of geological processes collectively called orogenesis. These inc... | Physical sciences | Tectonics | Earth science |
53916 | https://en.wikipedia.org/wiki/Herbicide | Herbicide | Herbicides (, ), also commonly known as weed killers, are substances used to control undesired plants, also known as weeds. Selective herbicides control specific weed species while leaving the desired crop relatively unharmed, while non-selective herbicides (sometimes called "total weed killers") kill plants indiscrimi... | Technology | Pest and disease control | null |
53933 | https://en.wikipedia.org/wiki/Permittivity | Permittivity | In electromagnetism, the absolute permittivity, often simply called permittivity and denoted by the Greek letter (epsilon), is a measure of the electric polarizability of a dielectric material. A material with high permittivity polarizes more in response to an applied electric field than a material with low permittivi... | Physical sciences | Electrostatics | Physics |
53941 | https://en.wikipedia.org/wiki/Triangle%20inequality | Triangle inequality | In mathematics, the triangle inequality states that for any triangle, the sum of the lengths of any two sides must be greater than or equal to the length of the remaining side. This statement permits the inclusion of degenerate triangles, but some authors, especially those writing about elementary geometry, will exclud... | Mathematics | Linear algebra | null |
53948 | https://en.wikipedia.org/wiki/Hippocampus | Hippocampus | The hippocampus (: hippocampi; via Latin from Greek , 'seahorse'), also hippocampus proper, is a major component of the brain of humans and many other vertebrates. In the human brain the hippocampus, the dentate gyrus, and the subiculum are the components of the hippocampal formation located in the limbic system.
The... | Biology and health sciences | Nervous system | Biology |
53949 | https://en.wikipedia.org/wiki/Black-and-white%20colobus | Black-and-white colobus | Black-and-white colobuses (or colobi) are Old World monkeys of the genus Colobus, native to Africa. They are closely related to the red colobus monkeys of genus Piliocolobus. There are five species of this monkey, and at least eight subspecies. They are generally found in high-density forests where they forage on leave... | Biology and health sciences | Old World monkeys | Animals |
53951 | https://en.wikipedia.org/wiki/Diarrhea | Diarrhea | Diarrhea (American English), also spelled diarrhoea or diarrhœa (British English), is the condition of having at least three loose, liquid, or watery bowel movements in a day. It often lasts for a few days and can result in dehydration due to fluid loss. Signs of dehydration often begin with loss of the normal stretchi... | Biology and health sciences | Non-infectious disease | null |
53991 | https://en.wikipedia.org/wiki/Adjoint%20functors | Adjoint functors | In mathematics, specifically category theory, adjunction is a relationship that two functors may exhibit, intuitively corresponding to a weak form of equivalence between two related categories. Two functors that stand in this relationship are known as adjoint functors, one being the left adjoint and the other the right... | Mathematics | Category theory | null |
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