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15-letter words containing a, t, o, p

  • arch of triumph — Arc de Triomphe.
  • archiepiscopate — the rank, office, or term of office of an archbishop
  • armaments depot — a store for armaments
  • arms inspection — the official checking of a country's weapons and other military equipment, usually to check that international agreements have been respected
  • astrophotograph — a photograph of the heavenly bodies
  • astrophotometry — the measurement of the intensity of light of celestial objects.
  • astrophysically — from an astrophysical point of view
  • astrophysicists — Plural form of astrophysicist.
  • at pistol point — being under or using the threat of being shot
  • at the point of — very close to; on the verge of
  • 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.
  • audio equipment — electrical devices used to play or record sound
  • autobiographers — Plural form of autobiographer.
  • autobiographies — Plural form of autobiography.
  • autolithography — a lithographic technique by which the artist draws or traces with a brush and pen directly on a stone or plate.
  • automatic pilot — An automatic pilot or an autopilot is a device in an aircraft that automatically keeps it on a particular course.
  • automorphically — in an automorphic manner
  • autoradiographs — Plural form of autoradiograph.
  • autoradiography — the technique or process of making autoradiographs.
  • 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
  • autotransplants — Plural form of autotransplant.
  • autotrophically — through an autotrophic process
  • 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 rotation — (operating system)   Any system for re-using backup media, e.g. magnetic tape. One extreme would be to use the same media for every backup (e.g. copy disk A to disk B), the other extreme would be to use new media every time. The trade-off is between the cost of buying and storing media and the ability to restore any version of any file. One example is the Grandfather, Father, Son (GFS) scheme.
  • 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.
  • balanoposthitis — An inflammation of the glans penis and the prepuce.
  • balloon payment — a large payment that concludes a series of smaller payments, for example in order to repay a loan
  • ballpoint (pen) — a pen having, instead of a point, a small ball bearing that picks up its ink by rolling against an interior ink reservoir
  • bandstop filter — A bandstop filter is a filter designed to eliminate all frequencies within a band of frequencies.
  • banking product — one of the various services offered by a bank to its customers: mortgages, loans, insurance etc
  • 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.
  • barothermograph — an automatic instrument for recording pressure and temperature.
  • be a wake-up to — to be fully alert to (a person, thing, action, etc)
  • 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.
  • beat oneself up — to reproach oneself
  • beet leafhopper — a small leafhopper (Circulifer tenellus) that transmits a very destructive virus to sugar beets
  • beyond the pale — If you think that someone's actions or behaviour are not acceptable, you can say that they are beyond the pale.
  • biostratigraphy — the examination of the ages of rock strata by using fossils
  • bit-mapped font — a computer font whose characters are held in memory as series of dots.
  • black operation — a covert and undocumented military operation
  • blasting powder — a form of gunpowder made with sodium nitrate instead of saltpeter, used chiefly for blasting rock, ore, etc.
  • boiled potatoes — potatoes, usually peeled, cooked in boiling water
  • bouillotte lamp — a table lamp of the 18th century, having two or three adjustable candle brackets and a common shade sliding on a central shaft.
  • bowel complaint — bowel disease or condition
  • box the compass — to name the compass points in order
  • 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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