19-letter words containing a, e, o
- affective psychosis — a severe mental disorder characterized by extreme moods of either depression or mania
- affordable care act — a federal law providing for a fundamental reform of the U.S. healthcare and health insurance system, signed by President Barack Obama in 2010: formally called Affordable Care Act or Patient Protection and Affordable Care Act.
- afternoon of a faun — L'Après-midi d'un Faune.
- agency spokesperson — a spokesperson for a government agency
- agitated depression — severe depression accompanied by extreme anxiety and agitation
- agricultural worker — a person who is employed in agriculture, usually a manual worker
- air cushion vehicle — ACV (def 2).
- 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.
- aldridge-brownhills — a town in central England, in Walsall unitary authority, West Midlands: formed by the amalgamation of neighbouring towns in 1966. Pop: 35 525 (2001)
- 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 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.
- alice-in-wonderland — fantastic; irrational
- 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.
- 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)
- alpha ursae minoris — Polaris
- 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.
- 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 society — a society or social group that espouses values different from those of the established social order.
- aluminium hydroxide — a white crystalline powder derived from bauxite and used in the manufacture of glass and ceramics, aluminium and its salts, and in dyeing. Formula: Al(OH)3 or Al2O3.3H2O
- ambassador-at-large — an ambassador with special duties who may be sent to more than one government
- 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 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.
- amino acid sequence — the unique sequence of amino acids that characterizes a given protein
- ammonium bifluoride — a white, crystalline, water-soluble, poisonous solid, NH 4 HF 2 , used chiefly for cleaning and sterilizing brewing and dairy equipment.
- 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
- 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
- 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 depression — depression (def 11).
- 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.
- answerphone message — a pre-recorded message that is left on an answering machine, usually inviting callers to leave a message
- 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.
- 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-vivisectionist — a person who opposes vivisection.
- anticholinesterases — Plural form of anticholinesterase.
- anticipatory breach — a declaration by one party to a contract that it does not intend to fulfil its obligations to the second party, who can then accept this declaration and choose not to be bound by the contract
- anticompetitiveness — The quality of being anticompetitive.