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19-letter words containing o, a, t

  • aqueduct of sylvius — a canal in the midbrain, connecting the third and fourth ventricles of the brain.
  • 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
  • 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.
  • 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.
  • as old as the hills — very old
  • as sick as a parrot — If you say that you feel as sick as a parrot, you feel very disappointed about something.
  • as things/people go — You use expressions like as things go or as children go when you are describing one person or thing and comparing them with others of the same kind.
  • asbestos cork award — (humour)   Once, long ago at MIT, there was a flamer so consistently obnoxious that another hacker designed, had made, and distributed posters announcing that said flamer had been nominated for the "asbestos cork award". (Any reader in doubt as to the intended application of the cork should consult the etymology under flame.) Since then, it is agreed that only a select few have risen to the heights of bombast required to earn this dubious dignity - but there is no agreement on *which* few.
  • ask for a signature — If you ask for a signature, you ask someone to write their name, in their own characteristic way, on a document.
  • assistant professor — An assistant professor is a college teacher who ranks above an instructor but below an associate professor.
  • associate professor — An associate professor is a college teacher who ranks above an assistant professor but below a professor.
  • associative storage — a storage device in which the information is identified by content rather than by an address
  • astra digital radio — (audio)   Digital Radio over satellite, compatible with analog television transmissions. Alternatively the normal TV subcarriers can be modulated by a MPEG-1 Layer-2 48 kHz 192 kbps signal. Quality is better than analog carriers and only needs half the bandwidth (analog stereo = 2 carrier, digital stereo = 1 carrier). Quality is limited and the data rate can't be increased.
  • at a (or one) blow — by one action
  • at most/at the most — You use at most or at the most to say that a number or amount is the maximum that is possible and that the actual number or amount may be smaller.
  • at once/all at once — If a number of different things happen at once or all at once, they all happen at the same time.
  • at one's discretion — as one wishes
  • at one's fingertips — readily available and within one's mental grasp
  • at sb's convenience — If something is arranged to happen at your convenience, it happens at a time which is most suitable for you.
  • at your convenience — at a time suitable to you
  • atherton technology — (company)   The comapny that developed the Software BackPlane CASE framework. Their Atherton Tool Integration Services were the basis for the ATIS standard.
  • atmospheric braking — a technique of reentry in which the vehicle is maneuvered in the upper atmosphere so as to lose velocity by utilizing drag without overheating.
  • atrial fibrillation — a local and uncontrollable twitching of muscle fibres that results in rapid and irregular heart and pulse rate
  • attachment disorder — an emotional and behavioral disorder arising from a failure to form a strong bond with one’s primary caregiver in early childhood and affecting one’s social relationships in later childhood and adulthood. See also attachment (def 3a).
  • attempt the life of — to try to kill
  • audio response unit — a device that enables a computer to give a spoken response by generating sounds similar to human speech.
  • augmented cognition — the study of the augmenting of human mental functions by computer programs
  • auriculoventricular — atrioventricular.
  • austro-prussian war — the war (1866) in which Prussia, Italy, and some minor German states opposed Austria, Saxony, Hanover, and the states of southern Germany.
  • author's alteration — a correction or change made in typeset copy that is not a correction of an error introduced by the compositor. Abbreviation: AA, A.A., a.a., aa.
  • autoerotic asphyxia — asphyxia caused by intentionally strangling oneself while masturbating in order to intensify the orgasm through reduced oxygen flow to the brain.
  • autotransplantation — autograft.
  • avogadro's constant — the number of atoms or molecules in a mole of a substance, equal to 6.022 52 × 1023
  • axiomatic semantics — (theory)   A set of assertions about properties of a system and how they are effected by program execution. The axiomatic semantics of a program could include pre- and post-conditions for operations. In particular if you view the program as a state transformer (or collection of state transformers), the axiomatic semantics is a set of invariants on the state which the state transformer satisfies. E.g. for a function with the type: sort_list :: [T] -> [T] we might give the precondition that the argument of the function is a list, and a postcondition that the return value is a list that is sorted. One interesting use of axiomatic semantics is to have a language that has a finitely computable sublanguage that is used for specifying pre and post conditions, and then have the compiler prove that the program will satisfy those conditions. See also operational semantics, denotational semantics.
  • backward compatible — backward compatibility
  • backward somersault — a somersault performed in a backward direction with the legs leading the rest of the body
  • bacteriochlorophyll — a pale blue-gray form of chlorophyll that is unique to the photosynthetic but anaerobic purple bacteria.
  • balance of payments — A country's balance of payments is the difference, over a period of time, between the payments it makes to other countries for imports and the payments it receives from other countries for exports.
  • balfour declaration — the statement made by Arthur Balfour in 1917 of British support for the setting up of a national home for the Jews in Palestine, provided that the rights of "existing non-Jewish communities" in Palestine could be safeguarded
  • ballistocardiograph — an instrument that records the slight recoil of the body, while on a special bed, caused by the contractions of the heart: used to measure cardiac pumping power and the elasticity of the aorta
  • balloon angioplasty — angioplasty in which a balloon catheter is moved to a blocked area of a blood vessel where the balloon is inflated to expand or force open the vessel
  • ballot-box stuffing — the act of illegally submitting more than one vote in a ballot in which only one vote is permitted
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