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16-letter words containing p, c, r

  • arteriocapillary — Relating to the arteries and the capillaries.
  • arthroscopically — By means of arthroscopy.
  • asparaginic acid — aspartic acid.
  • aston dark space — the dark region between the cathode and the cathode glow in a vacuum tube, occurring when the pressure is low.
  • atmospheric tide — a movement of atmospheric masses caused by the gravitational attraction of the sun and moon and by daily solar heating.
  • australopithecus — an extinct genus of small-brained,large-toothed bipedal hominids that lived in Africa between one and four million years ago.
  • autobiographical — An autobiographical piece of writing relates to events in the life of the person who has written it.
  • autoethnographic — Using ethnographic techniques to describe one's own life, or events in which one is a participant.
  • automatic repeat — a key on the keyboard of a typewriter, computer, etc, which, when depressed continuously, produces the character repeatedly until the key is released
  • autoradiographic — Of or pertaining to an autoradiograph, a radiographic image produced by the decay of a radioactive substance.
  • autostereoscopic — Of or pertaining to autostereoscopy.
  • auxiliary police — a part-time reserve attached to a regular police force
  • axminster carpet — a type of patterned carpet with a cut pile
  • back-propagation — (Or "backpropagation") A learning algorithm for modifying a feed-forward neural network which minimises a continuous "error function" or "objective function." Back-propagation is a "gradient descent" method of training in that it uses gradient information to modify the network weights to decrease the value of the error function on subsequent tests of the inputs. Other gradient-based methods from numerical analysis can be used to train networks more efficiently. Back-propagation makes use of a mathematical trick when the network is simulated on a digital computer, yielding in just two traversals of the network (once forward, and once back) both the difference between the desired and actual output, and the derivatives of this difference with respect to the connection weights.
  • background paper — a report or other piece of writing that is intended to provide contextual and historical information that will help people understand a particular topic or situation
  • bacterioplankton — (biology) The bacterial component of marine plankton.
  • balance of power — The balance of power is the way in which power is distributed between rival groups or countries.
  • banana republics — any of the small countries in the tropics, especially in the Western Hemisphere, whose economies are largely dependent on fruit exports, tourism, and foreign investors.
  • bankruptcy court — a section of the United States federal court which specializes in the handling of bankruptcy cases
  • bankruptcy order — a court order appointing a receiver to manage the property of a debtor or bankrupt
  • barbecue stopper — a controversial current-affairs issue
  • bargaining scope — the range of topics within the scope of a particular set of negotiations leading to a collective agreement
  • bashkir republic — a constituent republic of E central Russia, in the S Urals: established as the first Soviet autonomous republic in 1919; rich mineral resources. Capital: Ufa. Pop: 4 012 900 (2002). Area: 143 600 sq km (55 430 sq miles)
  • basque provinces — an autonomous region of N Spain, comprising the provinces of Álava, Guipúzcoa, and Vizcaya: inhabited mainly by Basques, who retained virtual autonomy from the 9th to the 19th century. Pop: 1 840 700 (2003 est). Area: about 7250 sq km (2800 sq miles)
  • batch processing — manufacturing products or treating materials in batches, by passing the output of one process to subsequent processes
  • batch production — production of goods in batches, rather than continuously
  • bayonet practice — drill in the use of a bayonet
  • beryllium copper — a copper alloy containing a small amount of beryllium and often some nickel or cobalt, having high strength, hardness, and electrical conductivity.
  • bessemer process — (formerly) a process for producing steel by blowing air through molten pig iron at about 1250°C in a Bessemer converter: silicon, manganese, and phosphorus impurities are removed and the carbon content is controlled
  • bicyclic terpene — (originally) any of a class of monocyclic hydrocarbons of the formula C 10 H 16 , obtained from plants.
  • big picture, the — a long-range or overall view or account of some complex matter
  • bimetallic strip — a strip consisting of two metals of different coefficients of expansion welded together so that it buckles on heating: used in thermostats, etc
  • bitter principle — any of various bitter-tasting substances, such as aloin, usually extracted from plants
  • black propaganda — propaganda that does not come from the source it claims to come from
  • black woodpecker — a large woodpecker, Dryocopus martius, found in parts of Eurasia and Africa
  • black-light trap — a trap for insects that uses ultraviolet light as an attractant.
  • bleaching powder — a white powder with the odour of chlorine, consisting of chlorinated calcium hydroxide with an approximate formula CaCl(OCl).4H2O. It is used in solution as a bleaching agent and disinfectant
  • blink comparator — an optical instrument used to detect small differences in two photographs of the same field or object by viewing them alternately, switching rapidly from one to the other.
  • boston cream pie — a cake of two layers with icing and a creamy filling
  • branchiopneustic — breathing by means of gills, as certain aquatic insect larvae.
  • brand acceptance — the extent to which consumers recognize and welcome a brand
  • bristlecone pine — a coniferous tree, Pinus aristata, of the western US, bearing cones with bristle-like prickles: one of the longest-lived trees, useful in radiocarbon dating
  • broadloom carpet — any carpet woven on a wide loom and not having seams, especially one wider than 54 inches (137 cm).
  • bronchopneumonia — inflammation of the lungs, originating in the bronchioles
  • brothel-creepers — soft-soled men's shoes that were originally popular in the 1950s
  • burnt-tip orchid — a small orchid, Orchis ustulata, resembling the lady orchid, having dark reddish-brown hoods that give a burnt look to the tip of the flower spike
  • buttercup family — the plant family Ranunculaceae, typified by mostly herbaceous plants having usually alternate leaves, multistaminate flowers sometimes lacking petals but with colorful sepals, and including the anemone, buttercup, clematis, columbine, delphinium, and monkshood.
  • buttercup squash — a small, usually dark-green squash that is a variety of Cucurbita maxima, having sweet orange flesh.
  • bypass capacitor — a capacitor which provides a low-impedance path for alternating current while not passing any direct current
  • california poppy — a papaveraceous plant, Eschscholtzia californica, of the Pacific coast of North America, having yellow or orange flowers and finely divided bluish-green leaves
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