19-letter words containing a, n, t
- 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-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.
- aladdin enterprises — (company) A small, privately owned, US software consulting and development company, founded in 1986, best known as the original developer of Ghostscript. Address: San Francisco Peninsula, California, USA. Not to be confused with Aladdin Systems, Inc..
- alcohol consumption — the drinking of alcohol
- alexander technique — a technique for developing awareness of one's posture and movement in order to improve it
- alexander the great — 356–323 bc, king of Macedon, who conquered Greece (336), Egypt (331), and the Persian Empire (328), and founded Alexandria
- alfred thayer mahan — Alfred Thayer [they-er] /ˈθeɪ ər/ (Show IPA), 1840–1914, U.S. naval officer and writer on naval history.
- 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.
- algorithmic trading — trading on international stock exchanges using computers that have been programmed to buy and sell shares according to fixed rules
- all-points bulletin — An all-points bulletin is a message sent by a police force to all its officers. The abbreviation APB is also used.
- all-terrain vehicle — a vehicle with treads or wheels designed to travel on rough ground
- allegheny mountains — a mountain range in Pennsylvania, Maryland, Virginia, and West Virginia: part of the Appalachian system; rising from 600 m (2000 ft) to over 1440 m (4800 ft)
- 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.
- alphonse and gaston — marked by a ritualistic courtliness in which two often competing participants graciously but stubbornly defer to each other: a kind of Alphonse and Gaston act in which each man insisted the other go through the doorway first.
- altazimuth mounting — a telescope mounting that allows motion of the telescope about a vertical axis (in azimuth) and a horizontal axis (in altitude)
- alternating current — An alternating current is an electric current that continually changes direction as it flows. The abbreviation AC is also used.
- alternating voltage — a voltage that reverses direction in regular cycles.
- alternative history — a genre of fiction in which the author speculates on how the course of history might have been altered if a particular historical event had had a different outcome
- alternative pathway — the activation of complement by contact with polysaccharides on bacteria, protozoa, or yeast cells: a nonspecific immune response. Compare classical pathway.
- alternative society — a society or social group that espouses values different from those of the established social order.
- ambient temperature — Ambient temperature is the temperature of the air surrounding a component.
- 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.
- ammonium binoxalate — a colorless, crystalline, water-soluble, poisonous solid, C 2 H 5 NO 4 ⋅H 2 O, used chiefly for removing ink stains from fabrics.
- 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-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.
- andrew s. tanenbaum — Andrew Tanenbaum
- androuet du cerceau — Androuet [ahn-droo-e] /ɑ̃ druˈɛ/ (Show IPA), Androuet du Cerceau.
- 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
- angle of refraction — the angle that a refracted beam of radiation makes with the normal to the surface between two media at the point of refraction
- anno urbis conditae — in a (specified) year from the founding of the city: the ancient Romans reckoned dates from Rome's founding, c. 753 b.c.
- annual limit values — Annual limit values are the maximum amounts of emissions which are allowed each year.
- antarctic peninsula — the largest peninsula of Antarctica, between the Weddell Sea and the Pacific: consists of Graham Land in the north and the Palmer Peninsula in the south
- anterograde amnesia — amnesia caused by brain damage in which the memory loss relates to events occurring after the damage
- anthropic principle — the cosmological theory that the presence of life in the universe limits the ways in which the very early universe could have evolved
- anthropocentrically — regarding the human being as the central fact of the universe.
- anthropomorphically — ascribing human form or attributes to a being or thing not human, especially to a deity.
- anti-comintern pact — a pact formed in 1936, based on agreements between Germany and Japan to oppose communism and the Third International: Italy and Spain subsequently became signatories.
- anti-ecclesiastical — of or relating to the church or the clergy; churchly; clerical; not secular.
- anti-fundamentalism — (sometimes initial capital letter) a religious movement characterized by a strict belief in the literal interpretation of religious texts, especially within American Protestantism and Islam.
- anti-fundamentalist — (sometimes initial capital letter) a religious movement characterized by a strict belief in the literal interpretation of religious texts, especially within American Protestantism and Islam.