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19-letter words containing a, r, i, n

  • alpha canis majoris — Sirius
  • alpha canis minoris — Procyon
  • alpha ursae minoris — Polaris
  • 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.
  • 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
  • ambient temperature — Ambient temperature is the temperature of the air surrounding a component.
  • 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.
  • ammonium bifluoride — a white, crystalline, water-soluble, poisonous solid, NH 4 HF 2 , used chiefly for cleaning and sterilizing brewing and dairy equipment.
  • 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
  • anarcho-syndicalism — syndicalism.
  • anarcho-syndicalist — syndicalism.
  • ancillary equipment — Ancillary equipment is machines and other technical things which are used with the main items of equipment to create a complete system.
  • 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.
  • 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-prohibitionist — a person who favors or advocates prohibition.
  • 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
  • antigua and barbuda — a state in the Caribbean, comprising the islands of Antigua, Barbuda, and Redonda: gained independence in 1981: a member of the Commonwealth. Official language: English. Religion: Christian majority. Currency: East Caribbean dollar. Capital: St John's. Pop: 90 156 (2013 est). Area: 442 sq km (171 sq miles)
  • antimony trisulfide — a black or orange-red crystalline compound, Sb2S3, used as a pigment, in pyrotechnics and matches, for fireproofing fabrics and paper, etc.
  • antoine louis barye — Antoine Louis [ahn-twan lwee] /ɑ̃ˈtwan lwi/ (Show IPA), 1795–1875, French sculptor and painter.
  • apollonius of perga — ?261–?190 bc, Greek mathematician, remembered for his treatise on conic sections
  • appetite depressant — a product which reduces one's appetite
  • application program — a computer program that is written and designed for a specific need or purpose
  • appointments bureau — an office responsible for filling appointments
  • appraisal interview — an interview by the manager of an employee who is being appraised
  • arbitration service — a service which provides an impartial referee to settle disputes
  • aristotle's lantern — a complex arrangement of muscles and calcareous teeth and plates forming an eversible organ in most echinoids, functioning in mastication.
  • arkwright furniture — late medieval English furniture of simple construction.
  • armed response unit — (in Britain) a unit of police officers who are trained to use firearms in situations where unarmed police officers would be in danger
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