19-letter words containing a, c
- african swine fever — a highly contagious fatal disease of pigs caused by a myxovirus. The disease is characterized by fever, blotches on the skin, depression, and lack of coordination
- after-sales service — A company's after-sales service is all the help and information that it provides to customers after they have bought a particular product.
- agency spokesperson — a spokesperson for a government agency
- agricultural worker — a person who is employed in agriculture, usually a manual worker
- air cushion vehicle — ACV (def 2).
- air traffic control — Air traffic control is the activity of organizing the routes that aircraft should follow, and telling pilots by radio which routes they should take.
- air-cushion vehicle — a vehicle that travels just above the surface of land or water on a cushion of air provided by a downward jet from its engines, propellers, etc.
- air-traffic control — a government service that facilitates the safe and orderly movement of aircraft within and between airports by receiving and processing data from radar and devices that monitor local weather conditions and by maintaining radio contact with pilots.
- alcazar de san juan — a town in S central Spain: associated with Cervantes and Don Quixote. Pop: 27 229 (2003 est)
- alcohol consumption — the drinking of alcohol
- alcoholic psychosis — any of a group of major mental disorders, as delirium tremens, Wernicke-Korsakoff syndrome, and hallucinosis, associated with organic brain injury due to alcohol.
- alexander technique — a technique for developing awareness of one's posture and movement in order to improve it
- alexander von kluck — Alexander von [ah-le-ksahn-duh r fuh n] /ˌɑ lɛˈksɑn dər fən/ (Show IPA), 1846–1934, German general.
- alexis mikhailovich — 1629–76, tsar of Russia (1645–76); father of Peter the Great
- alexis nikolayevich — (Aleksei Nikolayevich) 1904–18, son of Nicholas II of Russia, heir apparent to the Russian throne: executed in the Russian Bolshevik Revolution.
- algebraic data type — (programming) (Or "sum of products type") In functional programming, new types can be defined, each of which has one or more constructors. Such a type is known as an algebraic data type. E.g. in Haskell we can define a new type, "Tree": data Tree = Empty | Leaf Int | Node Tree Tree with constructors "Empty", "Leaf" and "Node". The constructors can be used much like functions in that they can be (partially) applied to arguments of the appropriate type. For example, the Leaf constructor has the functional type Int -> Tree. A constructor application cannot be reduced (evaluated) like a function application though since it is already in normal form. Functions which operate on algebraic data types can be defined using pattern matching: depth :: Tree -> Int depth Empty = 0 depth (Leaf n) = 1 depth (Node l r) = 1 + max (depth l) (depth r) The most common algebraic data type is the list which has constructors Nil and Cons, written in Haskell using the special syntax "[]" for Nil and infix ":" for Cons. Special cases of algebraic types are product types (only one constructor) and enumeration types (many constructors with no arguments). Algebraic types are one kind of constructed type (i.e. a type formed by combining other types). An algebraic data type may also be an abstract data type (ADT) if it is exported from a module without its constructors. Objects of such a type can only be manipulated using functions defined in the same module as the type itself. In set theory the equivalent of an algebraic data type is a discriminated union - a set whose elements consist of a tag (equivalent to a constructor) and an object of a type corresponding to the tag (equivalent to the constructor arguments).
- algebraic extension — a field containing a given field such that every element in the first field is algebraic over the given field.
- algebraic operation — any of the mathematical operations of addition, subtraction, multiplication, division, raising to a power, or extraction of a root.
- algebraic structure — (mathematics) Any formal mathematical system consisting of a set of objects and operations on those objects. Examples are Boolean algebra, numerical algebra, set algebra and matrix algebra.
- algorithmic trading — trading on international stock exchanges using computers that have been programmed to buy and sell shares according to fixed rules
- alice-in-wonderland — fantastic; irrational
- all-risks insurance — insurance that covers all risks to property except any types that are specifically excluded or limited in the policy
- all-terrain vehicle — a vehicle with treads or wheels designed to travel on rough ground
- alpha canis majoris — Sirius
- alpha canis minoris — Procyon
- alphabetic language — (human language) A written human language in which symbols reflect the pronunciation of the words. Examples are English, Greek, Russian, Thai, Arabic and Hebrew. Alphabetic languages contrast with ideographic languages.
- alternating current — An alternating current is an electric current that continually changes direction as it flows. The abbreviation AC is also used.
- alternative society — a society or social group that espouses values different from those of the established social order.
- ambulance insurance — Ambulance insurance is insurance cover that covers the cost of an emergency ambulance if one is needed.
- american black bear — a bear, Euarctos (or Ursus) americanus, inhabiting forests of North America. It is smaller and less ferocious than the brown bear
- american book award — any of several awards given annually since 1980 to an author whose book is judged the best in its category: administered by the Association of American Publishers. Abbreviation: ABA, A.B.A.
- american crab apple — a twiggy, stiff-branched tree, Malus coronaria, of southern central North America, having small fruit and rose-colored flowers that change to white.
- american directoire — a style of American furniture making and related crafts from c1805 to c1815, corresponding to the French Directoire and English Regency styles.
- american revolution — a sequence of actions by American colonists from 1763 to 1775 protesting British domination and culminating in the Revolutionary War
- american smoke tree — a small tree, Cotinus obovatus, of the cashew family, of the central southern U.S., having yellowish flowers and clusters of fleshy fruit with silky plumes.
- american wire gauge — American wire gauge is a measure of wire thickness.
- amino acid sequence — the unique sequence of amino acids that characterizes a given protein
- amount of substance — a measure of the number of entities (atoms, molecules, ions, electrons, etc) present in a substance, expressed in moles
- anaerobic digestion — the conversion of biodegradable waste matter into compost in the absence of oxygen
- analytic philosophy — a 20th-cent. philosophic movement characterized by its method of analyzing concepts and statements in the light of common experience and ordinary language so as to eliminate confusions of thought and resolve many traditional philosophical problems
- analytic psychology — the system of psychology developed by C. G. Jung as a variant of psychoanalysis
- analytical geometry — the branch of geometry that uses algebraic notation and analysis to locate a geometric point in terms of a coordinate system; coordinate geometry
- anarcho-syndicalism — syndicalism.
- anarcho-syndicalist — syndicalism.
- anatomical snuffbox — the triangular depression on the back of the hand between the thumb and the index finger
- ancillary equipment — Ancillary equipment is machines and other technical things which are used with the main items of equipment to create a complete system.
- androuet du cerceau — Androuet [ahn-droo-e] /ɑ̃ druˈɛ/ (Show IPA), Androuet du Cerceau.
- angels-on-horseback — a savoury of oysters wrapped in bacon slices and served on toast
- angioneurotic edema — swelling that occurs just beneath the surface of the skin or mucous membranes.
- angle of reflection — the angle that a beam of reflected radiation makes with the normal to a surface at the point of reflection