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17-letter words containing a, c, h, r

  • arithmetic-series — a sequence in which each term is obtained by the addition of a constant number to the preceding term, as 1, 4, 7, 10, 13, and 6, 1, −4, −9, −14.
  • armchair shopping — buying goods using a computer, telephone, or television in the home or via the postal system
  • around the corner — If you say that something is around the corner, you mean that it will happen very soon. In British English, you can also say that something is round the corner.
  • arunachal pradesh — a state in NE India, formed in 1986 from the former Union Territory. Capital: Itanagar. Pop: 1 091 117 (2001). Area: 83 743 sq km (32 648 sq miles)
  • as the crow flies — If you say that a place is a particular distance away as the crow flies, you mean that it is that distance away measured in a straight line.
  • ascend the throne — to become king or queen
  • ask for the check — If you ask for the check, you ask the waitperson in a restaurant to bring you a piece of paper on which the price of your meal is written.
  • assistant teacher — a person who assists a teacher in their work or who is not yet fully qualified as a teacher
  • at the service of — To be at the service of a person or organization means to be available to help or be used by that person or organization.
  • attachment theory — a set of concepts that explain the emergence of an emotional bond between an infant and primary caregiver and the way in which this bond affects the child’s behavioral and emotional development into adulthood. See also attachment (def 3a).
  • attraction sphere — centrosphere (sense 1)
  • audience research — research into the make-up and habits of the audience of a particular television or radio programme or network
  • australopithecine — any of various extinct apelike primates of the genus Australopithecus and related genera, remains of which have been discovered in southern and E Africa. Some species are estimated to be over 4.5 million years old
  • authority control — the establishment and maintainance of consistent forms of terms, as of names, subjects, and titles, to be used as headings in bibliographic records.
  • bachelor's button — any of several plants of a genus (Centaurea) of the composite family, that have scaly, vase-shaped bracts below the white, pink, or blue flowers; esp., the cornflower and knapweed
  • bachelor's degree — A bachelor's degree is a first degree awarded by universities.
  • bachelor's-button — any of various plants with round flower heads, especially the cornflower.
  • back on the rails — If something is back on the rails, it is beginning to be successful again after a period when it almost failed.
  • backward chaining — (algorithm)   An algorithm for proving a goal by recursively breaking it down into sub-goals and trying to prove these until facts are reached. Facts are goals with no sub-goals which are therefore always true. Backward training is the program execution mechanism used by most logic programming language like Prolog. Opposite: forward chaining.
  • bacteriorhodopsin — a purple protein containing retinal and found in the plasma membrane of certain bacteria (genus Halobacterium): it directly supplies electrochemical energy from sunlight
  • baggage checkroom — a left luggage office; a place at, for example, a railway station where baggage can be left
  • bald-faced hornet — any large, stinging paper wasp of the family Vespidae, as Vespa crabro (giant hornet) introduced into the U.S. from Europe, or Vespula maculata (bald-faced hornet or white-faced hornet) of North America.
  • barchester towers — a novel (1857) by Anthony Trollope.
  • barkhausen effect — the phenomenon of short, sudden changes in the magnetism of a ferromagnetic substance occurring when the intensity of the magnetizing field is continuously altered.
  • bell-shaped curve — bell curve
  • bergisch gladbach — city in W Germany, in the state of North Rhine-Westphalia: pop. 105,000
  • bergisch-gladbach — an industrial city in W Germany, near Cologne.
  • best first search — (algorithm)   A graph search algorithm which optimises breadth first search by ordering all current paths according to some heuristic. The heuristic attempts to predict how close the end of a path is to a solution. Paths which are judged to be closer to a solution are extended first. See also beam search, hill climbing.
  • biological father — the man whose semen fertilized the ovum from which a child was born
  • biological mother — the mother who gave birth to a child
  • biological rhythm — biorhythm.
  • biopharmaceutical — of or relating to drugs produced using biotechnology
  • birth certificate — Your birth certificate is an official document which gives details of your birth, such as the date and place of your birth, and the names of your parents.
  • black huckleberry — a low eastern North American shrub, Gaylussacia baccata, of the heath family, having yellowish-green leaves with resinous dots on the underside, clustered orange-red flowers, and shiny, black, edible fruit.
  • blackcurrant bush — a bush of the blackcurrant plant
  • boatswain's chair — a seat consisting of a short flat board slung from ropes, used to support a person working on the side of a vessel or in its rigging
  • branch delay slot — delayed control-transfer
  • branch prediction — (processor, algorithm)   A technique used in some processors with instruction prefetch to guess whether a conditional branch will be taken or not and prefetch code from the appropriate location. When a branch instruction is executed, its address and that of the next instruction executed (the chosen destination of the branch) are stored in the Branch Target Buffer. This information is used to predict which way the instruction will branch the next time it is executed so that instruction prefetch can continue. When the prediction is correct (and it is over 90% of the time), executing a branch does not cause a pipeline break. Some later CPUs simply prefetch both paths instead of trying to predict which way the branch will go. An extension of the idea of branch prediction is speculative execution.
  • breach of promise — (formerly) failure to carry out one's promise to marry
  • break the back of — to complete the greatest or hardest part of (a task)
  • british cameroons — a former British trust territory of West Africa
  • british columbian — of or relating to British Columbia or its inhabitants
  • british-cameroons — German Kamerun. a region in W Africa: a German protectorate 1884–1919; divided in 1919 into British and French mandates.
  • buncher resonator — See under Klystron.
  • caa the feet frae — to send (a person) sprawling
  • calcium hydroxide — a white crystalline slightly soluble alkali with many uses, esp in cement, water softening, and the neutralization of acid soils. Formula: Ca(OH)2
  • called to the bar — admitted to the practice of law as a barrister
  • can't be bothered — If you say that you can't be bothered to do something, you mean that you are not going to do it because you think it is unnecessary or because you are too lazy.
  • cape horn current — the part of the Antarctic Circumpolar Current flowing E at Cape Horn.
  • carbon disulphide — a colourless slightly soluble volatile flammable poisonous liquid commonly having a disagreeable odour due to the presence of impurities: used as an organic solvent and in the manufacture of rayon and carbon tetrachloride. Formula: CS2
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