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

  • 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
  • archiepiscopacy — a form of church government in which power is vested in archbishops.
  • archiepiscopate — the rank, office, or term of office of an archbishop
  • 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
  • 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).
  • assemblypersons — Plural form of assemblyperson.
  • 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.
  • 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 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.
  • bad housekeeper — a person who is not an efficient and thrifty domestic manager
  • 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 peroxide — a gray-white powder, BaO2, used as a bleach and in making hydrogen peroxide
  • barothermograph — an automatic instrument for recording pressure and temperature.
  • 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.
  • bear comparison — to be sufficiently similar in class or range to be compared with (something else), esp favourably
  • beet leafhopper — a small leafhopper (Circulifer tenellus) that transmits a very destructive virus to sugar beets
  • ben day process — a method of adding texture, shading, or detail to line drawings by overlaying a transparent sheet of dots or any other pattern during platemaking
  • bird of passage — If you refer to someone as a bird of passage, you mean that they are staying in a place for a short time before going to another place.
  • black operation — a covert and undocumented military operation
  • bladder campion — a European caryophyllaceous plant, Silene vulgaris, having white flowers with an inflated calyx
  • blasting powder — a form of gunpowder made with sodium nitrate instead of saltpeter, used chiefly for blasting rock, ore, etc.
  • board of parole — an agency that determines which prisoners are to be released on parole
  • brachiocephalic — of, relating to, or supplying the arm and head
  • break-in period — a period during which certain restrictions or moderation in operating should be followed, as the avoidance of high speed, rapid acceleration, or severe braking for a new automobile.
  • 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
  • breaking plough — a plough with a long shallow mouldboard for turning virgin land or sod land
  • brompheniramine — a substance, C 16 H 19 BrN 2 , used as an antihistamine in the management of various allergies, as hay fever.
  • cache la poudre — a river in N Colorado, flowing N and E to the South Platte River. 126 miles (203 km) long.
  • camera operator — a person who operates a film or television camera
  • camp counsellor — an adult supervisor assigned to a group of campers at a summer camp
  • campaign worker — a person who carries out duties for a political candidate or party, esp before an election
  • camphorated oil — a liniment consisting of camphor and peanut oil, used as a counterirritant
  • cape gooseberry — a tropical American solanaceous plant, Physalis peruviana, naturalized in southern Africa, having yellow flowers and edible yellow berries
  • cape horn fever — illness feigned by malingerers.
  • caprifoliaceous — of, relating to, or belonging to the Caprifoliaceae, a family of N temperate shrubs, small trees, and climbers including honeysuckle, elder, and guelder-rose
  • car transporter — a vehicle for carrying automobiles
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