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

  • spectrohelioscope — a spectroheliograph.
  • spectrophotometer — an instrument for making photometric comparisons between parts of spectra.
  • spectrophotometry — an instrument for making photometric comparisons between parts of spectra.
  • speech correction — the reeducation of speech habits that deviate from accepted speech standards.
  • spherical polygon — a closed figure formed by arcs of great circles on a spherical surface.
  • spongy parenchyma — the lower layer of the ground tissue of a leaf, characteristically containing irregularly shaped cells with relatively few chloroplasts and large intercellular spaces.
  • spore mother cell — a cell from which a spore is produced
  • stag's-horn coral — staghorn coral.
  • stannous chloride — a white, crystalline, water-soluble solid, SnCl 2 ⋅2H 2 O, used chiefly as a reducing and tinning agent, and as a mordant in dyeing with cochineal.
  • stenothermophilic — growing best within a narrow temperature range.
  • stick to the ribs — to pierce or puncture with something pointed, as a pin, dagger, or spear; stab: to stick one's finger with a needle.
  • stochastic matrix — a square matrix with positive entries totaling 1 in each row.
  • stretch limousine — a limousine that has been lengthened to provide extra seating accommodation and more legroom
  • stretching course — (in brickwork) a course of stretchers.
  • sulfonyl chloride — a colorless liquid, SO 2 Cl 2 , having a very pungent odor and corrosive to the skin and mucous membranes: used as a chlorinating or sulfonating agent.
  • support mechanism — any formal system or method of providing support or assistance
  • sydenham's chorea — a form of chorea affecting children, often associated with rheumatic fever
  • synchronistically — coincidence in time; contemporaneousness; simultaneousness.
  • synchronous motor — a synchronous machine that acts as a motor.
  • synchronous orbit — an orbit in which the orbital period of a satellite is identical to the spin period of the central body
  • synchronous speed — the speed at which an alternating-current machine must operate to generate electromotive force at a given frequency.
  • teacher education — training to become a teacher, usually at an institution of higher education
  • teachers' college — a college, usually having a four-year curriculum and granting a bachelor's degree, for training teachers for elementary and secondary schools
  • teaching software — computer software for use in providing online education
  • technical support — an advising and troubleshooting service provided by a manufacturer, typically a software or hardware developer, to its customers, often online or on the telephone.
  • telephone service — a company or public utility that provides a telephone-operating service
  • the bag of tricks — every device; everything
  • the barbary coast — a historic name for the Mediterranean coast of North Africa: a centre of piracy against European shipping from the 16th to the 19th centuries
  • the black country — the formerly heavily industrialized region of central England, northwest of Birmingham
  • the carboniferous — the Carboniferous period or rock system
  • the cold shoulder — a show of indifference; slight
  • the confederation — the original 13 states of the United States of America constituted under the Articles of Confederation and superseded by the more formal union established in 1789
  • the electoral map — a map showing the distribution of constituencies over a country
  • the factory floor — all the workers in a factory
  • the olympic torch — a torch that is symbolically lit at the site of the ancient Olympics in Olympia and transported by relay to the place where the Olympic Games are to be held. It is used to ignite a fire in a cauldron that will burn throughout the Games
  • the peace process — negotiations (between governments, countries, ect) towards peace or the resolution of a conflict
  • the rann of kutch — an extensive salt waste in W central India, and S Pakistan: consists of the Great Rann in the north and the Little Rann in the southeast; seasonal alternation between marsh and desert; some saltworks. In 1968 an international tribunal awarded about 10 per cent of the border area to Pakistan. Area: 23 000 sq km (9000 sq miles)
  • the witching hour — the hour at which witches are supposed to appear, usually midnight
  • theatricalization — to put into dramatic or theatrical form; dramatize.
  • thematic approach — teaching organized by theme rather than by school subject
  • therapeutic touch — the laying on of hands by a healer
  • thermocoagulation — the coagulation of tissue by heat-producing high-frequency electric currents, used therapeutically to remove small growths or to create specific lesions in the brain.
  • thermoelectricity — electricity generated by heat or temperature difference, as in a thermocouple.
  • thermoperiodicity — the effect on an organism of rhythmic fluctuations in temperature.
  • thiosulfuric acid — an acid, H 2 S 2 O 3 , that may be regarded as sulfuric acid with one oxygen atom replaced by sulfur.
  • third commandment — “Thou shalt not take the name of the Lord thy God in vain”: third of the Ten Commandments.
  • thread escutcheon — a raised metal rim around a keyhole.
  • three-course meal — A three-course meal is a meal that consists of three parts served one after the other.
  • throat microphone — a microphone worn around the throat and actuated by vibrations of the larynx, used when background noise would obscure the sound of speech, as in an airplane cockpit.
  • to make sth clear — If you make something clear, you say something in a way that makes it impossible for there to be any doubt about your meaning, wishes, or intentions.
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