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15-letter words containing o, f, a

  • automatic focus — a system in a camera which automatically adjusts the lens so that the object being photographed is in focus, often one using infrared light to estimate the distance of the object from the camera
  • automatic rifle — a type of light machine gun capable of firing automatically or in single shots.
  • 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
  • axiom of choice — the axiom of set theory that given any collection of disjoint sets, a set can be so constructed that it contains one element from each of the given sets.
  • azobisformamide — (chemistry) azodicarbonamide.
  • 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.
  • baja california — peninsula in Mexico, between the Pacific & the Gulf of California: divided into a northern state (Baja California), 27,071 sq mi (70,114 sq km), pop. 1,661,000, cap. Mexicali; and a southern state (Baja California Sur), 28,447 sq mi (73,677 sq km), pop. 318,000, cap. La Paz
  • bandstop filter — A bandstop filter is a filter designed to eliminate all frequencies within a band of frequencies.
  • bank of england — the central bank of the United Kingdom, which acts as banker to the government and the commercial banks. It is responsible for managing the government's debt and implementing its policy on other monetary matters: established in 1694, nationalized in 1946; in 1997 the government restored the authority to set interest rates to the Bank
  • 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.
  • barefoot doctor — (esp in developing countries) a worker trained as a medical auxiliary in a rural area who dispenses medicine, gives first aid, assists at childbirth, etc
  • battle of wills — A battle of wills is a situation that involves people who try to defeat each other by refusing to change their own aims or demands and hoping that their opponents will weaken first.
  • bay of campeche — the SW part of the Gulf of Mexico
  • bayonet fitting — a type of fastening in which a cylindrical member is inserted into a socket against spring pressure and turned so that pins on its side engage in slots in the socket
  • beast of burden — A beast of burden is an animal such as an ox or a donkey that is used for carrying or pulling things.
  • beat oneself up — to reproach oneself
  • beef stroganoff — a dish of thin strips of beef cooked with onions, mushrooms, and seasonings, served in a sour-cream sauce
  • beet leafhopper — a small leafhopper (Circulifer tenellus) that transmits a very destructive virus to sugar beets
  • before the fact — before the commission of the offence
  • before the mast — as an apprentice seaman
  • belgian griffon — one of a variety of the Brussels griffon having a black or reddish-brown and black coat.
  • biogasification — the conversion of organic matter into biogas.
  • 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.
  • bit-mapped font — a computer font whose characters are held in memory as series of dots.
  • board of health — an agency with responsibility for health in state, country, etc
  • board of parole — an agency that determines which prisoners are to be released on parole
  • board-certified — A doctor who is board-certified has passed tests and meets the standards of a board of specialists in their area of medicine.
  • bohemian forest — a mountain range between the SW Czech Republic and SE Germany. Highest peak: Arber, 1457 m (4780 ft)
  • book of account — a book to keep accounts in; ledger
  • book of changes — an ancient Chinese book of divination, in which 64 pairs of trigrams are shown with various interpretations.
  • bookmaking firm — an organization that accepts bets from gamblers and pays out winnings
  • breach of faith — a violation of good faith, confidence, or trust; betrayal: To abandon your friends now would be a breach of faith.
  • breach of trust — a violation of duty by a trustee or any other person in a fiduciary position
  • breakbone fever — dengue
  • bristol fashion — clean and neat, with newly painted and scrubbed surfaces, brass polished, etc
  • britneyfication — the effect on clothes and fashions of following the revealing styles favoured by the US pop singer Britney Spears (born 1981)
  • buffalo currant — an ornamental shrub, Ribes odoratum, of the central U.S., having showy, drooping clusters of fragrant yellow flowers and edible black fruit.
  • buffalo soldier — (formerly, especially among American Indians) a black soldier.
  • bureau of mines — a division of the Department of the Interior, created in 1910, that studies the nation's mineral resources and inspects mines.
  • caffe macchiato — a hot beverage consisting of espresso and a small amount of foamed milk.
  • calcareous tufa — tufa
  • california gull — a large gull, Larus californicus, of the western U.S.
  • california mink — cacomistle.
  • california roll — a sushi roll containing avocado, cucumber, and crabmeat, or imitation crabmeat, wrapped in vinegared rice and seaweed.
  • california rose — a cultivated variety of a bindweed, Calystegia hederacea, having showy, double, rose-colored flowers.
  • call for margin — a demand made by a stockbroker for partial payment of a client's debt due to decreasing value of the collateral
  • call forwarding — a telephone service that allows incoming calls to be transferred automatically to another number or extension
  • calorific value — the quantity of heat produced by the complete combustion of a given mass of a fuel, usually expressed in joules per kilogram
  • canadian forces — the official name for the military forces of Canada
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