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15-letter words containing a, e, r, o

  • apolipoproteins — Plural form of apolipoprotein.
  • apollo asteroid — one of a number of asteroids whose orbits cross that of the earth.
  • apollo computer — (company)   A company making workstations often used for CAD. From 1980 to 1987, Apollo were the largest manufacturer of network workstations. Apollo workstations ran Aegis, a proprietary operating system with a Posix-compliant Unix alternative frontend. Apollo's networking was particularly elegant, among the first to allow demand paging over the network, and allowing a degree of network transparency and low sysadmin-to-machine ratio that is still unmatched. Apollo's largest customers were Mentor Graphics (electronic design), GM, Ford, Chrysler, and Boeing (mechanical design). Apollo was acquired by Hewlett-Packard in 1989, and gradually closed down over the period 1990-1997.
  • apostle pitcher — a stoneware pitcher decorated in relief with figures of the apostles.
  • apostles' creed — a concise statement of Christian beliefs dating from about 500 ad, traditionally ascribed to the Apostles
  • appellate court — In the United States, an appellate court is a special court where people who have been convicted of a crime can appeal against their conviction.
  • apple-pie order — perfect order or condition
  • apprentice work — work done when young and a novice
  • appropriateness — suitable or fitting for a particular purpose, person, occasion, etc.: an appropriate example; an appropriate dress.
  • approved school — In Britain in the past, an approved school was a boarding school where young people could be sent to stay if they had been found guilty of a crime.
  • approximateness — The quality of being approximate.
  • arc de triomphe — the triumphal arch in Paris begun by Napoleon I to commemorate his victories of 1805–6 and completed in 1836
  • archaeastronomy — (astronomy, archaeology) The historical, especially archeological, study of astronomy; the study of the astronomical systems and methods of ancient cultures often embracing the astrology and cosmology of the past.
  • archaeobotanist — A person engaged in archaeobotany.
  • archeoastronomy — the branch of archaeology that deals with the apparent use by prehistoric civilizations of astronomical techniques to establish the seasons or the cycle of the year, especially as evidenced in the construction of megaliths and other ritual structures.
  • archeologically — In a archeological manner or fashion.
  • archiepiscopacy — a form of church government in which power is vested in archbishops.
  • archiepiscopate — the rank, office, or term of office of an archbishop
  • architectonical — Alternative form of architectonic.
  • aristotelianism — a philosophical tradition based on the wide-ranging belief system of Aristotle
  • armaments depot — a store for armaments
  • armour-piercing — capable of penetrating armour plate
  • arms inspection — the official checking of a country's weapons and other military equipment, usually to check that international agreements have been respected
  • army air forces — a unit comprising almost all aviation, with its personnel, equipment, etc.: it became part of the Air Force on July 26, 1947.
  • army-navy store — a retail store selling a stock of surplus army, naval, and other military apparel and goods, often at bargain rates.
  • around the bend — to force (an object, especially a long or thin one) from a straight form into a curved or angular one, or from a curved or angular form into some different form: to bend an iron rod into a hoop.
  • around the horn — (thrown) from third base to second to first in trying for a double play
  • array processor — (processor)   (Or "vector processor") A computer, or extension to its arithmetic unit, that is capable of performing simultaneous computations on elements of an array or table of data in some number of dimensions. The IBM AltiVec (the "Velocity Engine" used in the Apple G4 computers) is a vector processor. Common uses for array processors include analysis of fluid dynamics and rotation of 3d objects, as well as data retrieval, in which elements of a database are scanned simultaneously. Array processors are very rare now (1998).
  • arrivals lounge — a waiting area for people meeting passengers
  • arrondissements — Plural form of arrondissement.
  • arterialization — to convert (venous blood) into arterial blood by the action of oxygen in the lungs.
  • articles of war — the disciplinary and legal procedures by which the naval and military forces of Great Britain were bound before the 19th century
  • asiatic cholera — cholera (def 1).
  • assemblypersons — Plural form of assemblyperson.
  • astrophotometry — the measurement of the intensity of light of celestial objects.
  • at death's door — If you say that someone is at death's door, you mean they are very ill indeed and likely to die.
  • at short notice — Notice is used in expressions such as 'at short notice', 'at a moment's notice' or 'at twenty-four hours' notice', to indicate that something can or must be done within a short period of time.
  • at the controls — If someone is at the controls of a machine or other piece of equipment, they are operating it.
  • at the mercy of — in the power of
  • at your service — You can use 'at your service' after your name as a formal way of introducing yourself to someone and saying that you are willing to help them in any way you can.
  • atherosclerosis — a degenerative disease of the arteries characterized by patchy thickening of the inner lining of the arterial walls, caused by deposits of fatty material; a form of arteriosclerosis
  • atherosclerotic — Of, pertaining to, or afflicted with atherosclerosis.
  • athletic sports — sports, esp track and field events, in which athleticism is required
  • atmospherically — pertaining to, existing in, or consisting of the atmosphere: atmospheric vapors.
  • atrabiliousness — The state or quality of being characterized by melancholy or glumness.
  • attorney-at-law — a lawyer qualified to represent in court a party to a legal action
  • audio frequency — a frequency in the range 20 hertz to 20 000 hertz. A sound wave of this frequency would be audible to the human ear
  • audio recording — an electronic recording of sound
  • auditor general — (in Canada) a federal official responsible for auditing government departments and making an annual report
  • augmented roman — a writing system based on an expanded English alphabet, consisting of 43 characters representing different phonemes of spoken English, used for teaching beginners to read. Abbreviation: I.T.A., i.t.a.
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