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15-letter words containing o, t, r

  • astrophysicists — Plural form of astrophysicist.
  • 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
  • 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.
  • augusta gregory — Lady Augusta (Isabella Augusta Persse) 1852–1932, Irish dramatist.
  • authoritatively — having due authority; having the sanction or weight of authority: an authoritative opinion.
  • autobiographers — Plural form of autobiographer.
  • autobiographies — Plural form of autobiography.
  • autocorrelation — the condition occurring when successive items in a series are correlated so that their covariance is not zero and they are not independent
  • autocorrelative — Relating to autocorrelation.
  • autodestructive — likely to cause one's own destruction
  • autofluorescent — Of, pertaining to, or exhibiting autofluorescence.
  • autolithography — a lithographic technique by which the artist draws or traces with a brush and pen directly on a stone or plate.
  • automata theory — the formal study of the power of computation of abstract machines
  • automatic drive — an automotive transmission requiring either very little or no manual shifting of gears.
  • automatic rifle — a type of light machine gun capable of firing automatically or in single shots.
  • automorphically — in an automorphic manner
  • autoradiographs — Plural form of autoradiograph.
  • autoradiography — the technique or process of making autoradiographs.
  • autorhythmicity — The quality of being autorhythmic, or generating its own rhythm, as for example the cells of the cardiac muscle do.
  • 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
  • autotransformer — a transformer in which part of the winding is common to both primary and secondary circuits
  • autotransfusion — a process in which a patient receives some of his or her own blood in a transfusion rather than a donor's blood
  • autotransplants — Plural form of autotransplant.
  • autotrophically — through an autotrophic process
  • auxiliary rotor — the tail rotor of a helicopter, used for directional and rotary control
  • aviator glasses — sunglasses that look like goggles
  • azerty keyboard — a common European version of typewriter keyboard layout with the characters a, z, e, r, t, and y positioned on the top row of alphabetic characters at the left side of the keyboard
  • 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.
  • baconian theory — the theory attributing the authorship of Shakespeare's plays to Francis Bacon.
  • bacterial ghost — a bacterial cell that is emptied and filled artificially with another substance
  • bacteriological — Of or relating to bacteriology or bacteria.
  • bacteriophagous — Pertaining to the predation and consumption of bacterium.
  • badminton court — the court on which games of badminton are played
  • balance control — a state of equilibrium or equipoise; equal distribution of weight, amount, etc.
  • 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
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