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15-letter words containing a, p, r, e, t

  • apical meristem — meristem at the apex of a root or shoot.
  • 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
  • appeal tribunal — An appeal tribunal is a special court or committee that is formed to reconsider a decision made by another court or committee.
  • 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.
  • apprentice work — work done when young and a novice
  • apprenticeships — Plural form of apprenticeship.
  • appropriateness — suitable or fitting for a particular purpose, person, occasion, etc.: an appropriate example; an appropriate dress.
  • 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
  • archiepiscopate — the rank, office, or term of office of an archbishop
  • armaments depot — a store for armaments
  • armes parlantes — arms using devices to illustrate the name of the bearers, such as a rose and a wall to illustrate the name Rosewall
  • arms inspection — the official checking of a country's weapons and other military equipment, usually to check that international agreements have been respected
  • artillery plant — any of various tropical urticaceous plants of the genus Pilea, such as P. microphylla, all having stamens that discharge their pollen explosively
  • asset-stripping — If a person or company is involved in asset-stripping, they buy companies cheaply, sell off their assets to make a profit, and then close the companies down.
  • astrophotometry — the measurement of the intensity of light of celestial objects.
  • 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.
  • australian pine — casuarina
  • autobiographers — Plural form of autobiographer.
  • autobiographies — Plural form of autobiography.
  • autostereoscopy — The display of stereoscopic images without the use of special viewing equipment.
  • autotetraploidy — the generation of the tetraploid state, created by the fusing of two nuclei from the same species
  • back plastering — the introduction of partitions of lath and plaster between the inner and outer surfaces of a stud wall in order to improve the insulating properties of the wall.
  • back projection — a method of projecting pictures onto a translucent screen so that they are viewed from the opposite side, used esp in films to create the illusion that the actors in the foreground are moving
  • backup software — (tool, software)   Software for doing a backup, often included as part of the operating system. Backup software should provide ways to specify what files get backed up and to where. It may include its own scheduling function to automate the procedure or, preferably, work with generic scheduling facilities. It may include facilities for managing the backup media (e.g. maintaining an index of tapes) and for restoring files from backups. Examples are Unix's dump command and Windows's ntbackup.
  • bacteriophagous — Pertaining to the predation and consumption of bacterium.
  • bandpass filter — A bandpass filter is a filter designed to pass all frequencies within a band of frequencies.
  • bandstop filter — A bandstop filter is a filter designed to eliminate all frequencies within a band of frequencies.
  • baptism of fire — If someone who has just begun a new job has a baptism of fire, they immediately have to cope with very many severe difficulties and obstacles.
  • barium sulphate — a white insoluble fine dense powder, used as a pigment, as a filler for paper, rubber, etc, and in barium meals. Formula: BaSO4
  • barothermograph — an automatic instrument for recording pressure and temperature.
  • battleship gray — a subdued bluish gray.
  • bayeux tapestry — an 11th- or 12th-century embroidery in Bayeux, nearly 70.5 m (231 ft) long by 50 cm (20 inches) high, depicting the Norman conquest of England
  • beam-power tube — a vacuum tube in which the stream of electrons flowing to the plate is focused by the action of a set of auxiliary, charged elements, giving an increase in output power.
  • beet leafhopper — a small leafhopper (Circulifer tenellus) that transmits a very destructive virus to sugar beets
  • bias (ply) tire — a motor vehicle tire having a foundation of plies of rubberized cords in a crisscross pattern of lines diagonal to the center line of the tread
  • bipartite graph — complete graph
  • birch partridge — ruffed grouse
  • black operation — a covert and undocumented military operation
  • black september — a Palestinian Terrorist group, responsible for the assassinations of Israeli athletes at the Olympic Games at Munich in 1972
  • blasting powder — a form of gunpowder made with sodium nitrate instead of saltpeter, used chiefly for blasting rock, ore, etc.
  • braille printer — (printer)   (Or "(Braille) embosser") A printer, necessarily an impact printer, that renders text as Braille. Blind users call other printers ink printers.
  • brake parachute — a parachute attached to the rear of a vehicle and opened to assist braking
  • break-out group — a group of people who detach themselves from a larger group or meeting in order to hold separate discussions
  • breakeven point — a point at which the total revenue and total cost are equal
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