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20-letter words containing a, e, t, i, o

  • anniversary reaction — a psychological reaction, as depression, occurring at a regularly fixed time and associated with the recollection of an emotionally upsetting past experience, as loss of a loved one.
  • anthemius of tralles — c474–c534, Greek mathematician and architect, active in Lydia.
  • anti-corn law league — an organization founded in 1839 by Richard Cobden and John Bright to oppose the Corn Laws, which were repealed in 1846
  • anti-motion-sickness — combatting the effects of motion sickness
  • antidiuretic hormone — vasopressin. Abbreviation: ADH.
  • antifriction bearing — a roller bearing or ball bearing.
  • antigestational drug — a drug that averts a pregnancy by preventing the fertilized egg from becoming implanted in the uterine wall.
  • antimony oxychloride — a white, water-insoluble powder, SbOCl, used chiefly in the manufacture of antimony salts.
  • antimony trifluoride — a white to grayish-white, crystalline, hygroscopic, water-soluble, poisonous solid, SbF 3 , used chiefly in dyeing textiles.
  • antonello da messina — ?1430–?79, Italian painter, born in Sicily. His paintings include St Jerome in His Study and Portrait of a Man
  • aortic insufficiency — abnormal closure of the aortic valve resulting in regurgitation of blood to the left ventricle.
  • apostolic succession — the doctrine that the authority of Christian bishops derives from the Apostles through an unbroken line of consecration
  • apothecaries' weight — a system of weights, formerly used in pharmacy, based on the Troy ounce, which contains 480 grains. 1 grain is equal to 0.065 gram
  • apple computer, inc. — (company)   Manufacturers of the Macintosh range of personal computers as well as the earlier Apple I, Apple II and Lisa. Founded on 1 April 1976 by Steve Jobs and Steve Wozniak. Apples were among the first microcomputers. They originally used the 6502 processor and are still being made (August 1994), now using the 65816. The Apple II line, which includes the Apple I, is the longest existing line of microcomputers. Steve Jobs left Apple (involuntarily) and started NeXT and later returned when Apple bought NeXT in late 1997(?). Quarterly sales $2150M, profits $138M (Aug 1994). http://apple.com/.
  • application software — software designed for a specific need or purpose
  • applications package — a specialized program or set of specialized programs and associated documentation designed to carry out a particular task
  • arches national park — a national park in E Utah: natural arch formations. 114 sq. mi. (295 sq. km).
  • architectural bronze — a brass alloy of about 57 percent copper, 41 percent zinc, and 2 percent lead.
  • argument from design — the argument for the existence of God based on the assumption that order in the universe implies an orderer and cannot be a natural feature of the universe.
  • articulatory feature — a property of a speech sound based on its voicing or on its place or manner of articulation in the vocal tract, as voiceless, bilabial, or stop used in describing the sound (p).
  • artificial selection — a process in the breeding of animals and in the cultivation of plants by which the breeder chooses to perpetuate only those forms having certain desirable inheritable characteristics.
  • aschheim-zondek test — a test used to detect whether a woman is pregnant by noting the effect on the ovaries of an immature mouse or rabbit injected with her urine.
  • asexual reproduction — reproduction, as budding, fission, or spore formation, not involving the union of gametes.
  • asian tiger mosquito — a mosquito, Aedes albopictus, native to Asia, that transmits yellow fever and dengue and possibly West Nile virus. Compare yellow-fever mosquito.
  • asset turnover ratio — An asset turnover ratio is a measure of the efficiency of a company, that is calculated by dividing sales for a period by average total assets.
  • associated statehood — the semi-independent political status of various former British colonies in the Caribbean from 1967 until each became an independent state in the British Commonwealth, by which Britain retained responsibility for defence and some aspects of foreign affairs. The associated states were Anguilla, Antigua, Dominica, Grenada, St Kitts-Nevis, St Lucia, and St Vincent and the Grenadines
  • astatic galvanometer — a galvanometer that is unaffected by the earth's magnetic field and is used for measuring small currents.
  • at one's convenience — at a time, or in a place or manner, suitable to one
  • at one's finger tips — the tip or end of a finger.
  • at someone's service — ready to serve or cooperate with someone
  • at the best of times — You say at the best of times when you are making a negative or critical comment to emphasize that it is true even when the circumstances are as favourable as possible.
  • at two hours' notice — with notification only two hours in advance
  • atmospheric pressure — Atmospheric pressure is the pressure of the atmosphere on the Earth's surface.
  • audio-lingual method — a technique of foreign-language instruction that emphasizes audio-lingual skills over reading and writing and is characterized by extensive use of pattern practice.
  • automobile insurance — Automobile insurance is insurance coverage for cars.
  • auxiliary power unit — an additional engine fitted to an aircraft to operate when the main engines are not in use
  • axiomatic set theory — (theory)   One of several approaches to set theory, consisting of a formal language for talking about sets and a collection of axioms describing how they behave. There are many different axiomatisations for set theory. Each takes a slightly different approach to the problem of finding a theory that captures as much as possible of the intuitive idea of what a set is, while avoiding the paradoxes that result from accepting all of it, the most famous being Russell's paradox. The main source of trouble in naive set theory is the idea that you can specify a set by saying whether each object in the universe is in the "set" or not. Accordingly, the most important differences between different axiomatisations of set theory concern the restrictions they place on this idea (known as "comprehension"). NBG (von Neumann-Bernays-Goedel) set theory sort of allows comprehension for all formulae without restriction, but distinguishes between two kinds of set, so that the sets produced by applying comprehension are only second-class sets. NBG is exactly as powerful as ZF, in the sense that any statement that can be formalised in both theories is a theorem of ZF if and only if it is a theorem of ZFC. MK (Morse-Kelley) set theory is a strengthened version of NBG, with a simpler axiom system. It is strictly stronger than NBG, and it is possible that NBG might be consistent but MK inconsistent. ML ("Modern Logic") is to NF as NBG is to ZF. (Its name derives from the title of the book in which Quine introduced an early, defective, form of it). It is stronger than ZF (it can prove things that ZF can't), but if NF is consistent then ML is too.
  • backwards compatible — backward compatibility
  • bacteriochlorophylls — Plural form of bacteriochlorophyll.
  • ballistic trajectory — the path of an unpowered object, as a missile, moving only under the influence of gravity and possibly atmospheric friction and with its surface providing no significant lift to alter the course of flight.
  • baptism for the dead — the baptism of a living person in the place of and for the sake of one who has died unbaptized: now practiced chiefly by Mormons.
  • basal metabolic rate — the rate at which heat is produced by the body at rest, 12 to 14 hours after eating, measured in kilocalories per square metre of body surface per hour
  • basic lead carbonate — ceruse.
  • basic object adapter — (architecture)   (BOA) Part of the CORBA architecture.
  • bats-wing coral-tree — a small tree, Erythrina verspertilio, of tropical and subtropical Australia with red flowers and leaves shaped like the wings of a bat
  • be in the market for — to wish to buy or acquire
  • be set in one's ways — If you say that someone is set in their ways, you are being critical of the fact that they have fixed habits and ideas which they will not easily change, even though they may be old-fashioned.
  • beat the shit out of — to give a severe beating to
  • beaverhead mountains — a mountain range on the border of E Idaho and SW Montana, in the Bitterroot Range. 10,961 feet (3343 meters).
  • benoit b. mandelbrot — Benoit Mandelbrot
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