19-letter words containing r, a
- 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.
- andrew s. tanenbaum — Andrew Tanenbaum
- 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
- 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
- appetitive behavior — activity that increases the likelihood of satisfying a specific need, as restless searching for food by a hungry predator (distinguished from consummatory behavior).
- 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
- apres moi le deluge — after me the deluge
- arbitration service — a service which provides an impartial referee to settle disputes
- arecibo observatory — an observatory in Puerto Rico at which the world's largest dish radio telescope (diameter 305 m) is situated. It is operated by the National Astronomy and Ionosphere Center
- aristotle's lantern — a complex arrangement of muscles and calcareous teeth and plates forming an eversible organ in most echinoids, functioning in mastication.
- ark of the covenant — the chest containing the two stone tablets inscribed with the Ten Commandments, kept in the holiest part of the ancient Jewish Tabernacle: Ex. 25:10
- 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
- armillaria root rot — a widespread rot caused by the honey mushroom, Armillariella mellea, seriously damaging to the roots of various hardwoods, conifers, and other trees.
- army of the potomac — Union forces, trained and organized by Gen. George B. McClellan, that guarded Washington, D.C., against a Confederate invasion across the Potomac and fought battles in the eastern sector during the Civil War.
- aromatase inhibitor — any of a class of drugs that inhibit the action of aromatase: used in the treatment of breast and ovarian cancer
- arsenic trichloride — a colorless or yellow, oily, poisonous liquid, AsCl 3 , used chiefly as an intermediate in the manufacture of organic arsenicals.
- artemis microkernel — (operating system) A microkernel currently under development by Dave Hudson <[email protected]>, scheduled for release under GPL in May 1995. It is targeted at embedded applications on Intel 80386, Intel 486 and Pentium based systems.
- articulated vehicle — a large vehicle (esp a lorry) made in two separate sections, a tractor and a trailer, connected by a pivoted bar
- artificial additive — artificial flavouring, colouring or preservatives
- artificial climbing — the sport of climbing an artificially constructed, rocklike wall by means of footholds and handholds and, typically, a belaying device.
- artificial daylight — artificial light having approximately the same spectral characteristics as natural daylight
- artificial language — an invented language, esp one intended as an international medium of communication or for use with computers
- as a matter of fact — You use as a matter of fact to introduce a statement that gives more details about what has just been said, or an explanation of it, or something that contrasts with it.