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18-letter words containing o, t, r, h, i

  • sonic depth finder — a sonar instrument that uses echolocation to measure depths under water.
  • southern rhodesian — a former name (until 1964) of Zimbabwe (def 1).
  • spectroheliography — the process of obtaining an image of the sun in light of a particular wavelength, such as calcium or hydrogen, showing the distribution of the element over the surface and in the solar atmosphere, using a spectroheliograph
  • speech recognition — Computers. the computerized analysis of spoken words in order to identify the speaker, as in security systems, or to respond to voiced commands: the analysis is performed by finding patterns in the spectrum of the incoming sound and comparing them with stored patterns of elements of sound, as phones, or of complete words.
  • spherical geometry — the branch of geometry that deals with figures on spherical surfaces.
  • spike-tooth harrow — a harrow equipped with straight teeth on horizontal bars, usually employed to smooth and level plowed soil or seedbeds for planting or sowing.
  • stoichiometrically — of or relating to stoichiometry.
  • stokely carmichael — Hoagland Howard [hohg-luh nd] /ˈhoʊg lənd/ (Show IPA), ("Hoagy") 1899–1981, U.S. songwriter and musician.
  • strathclyde region — a former local government region in W Scotland: formed in 1975 from Glasgow, Renfrewshire, Lanarkshire, Buteshire, Dunbartonshire, and parts of Argyllshire, Ayrshire, and Stirlingshire; replaced in 1996 by the council areas of Glasgow, Renfrewshire, East Renfrewshire, Inverclyde, North Lanarkshire, South Lanarkshire, Argyll and Bute, East Dunbartonshire, West Dunbartonshire, North Ayrshire, South Ayrshire, and East Ayrshire
  • superstring theory — any supersymmetric string theory in which each type of elementary particle is treated as a vibration of a single fundamental string (superstring) at a particular frequency.
  • supportive therapy — any treatment, such as the intravenous administration of certain fluids, designed to reinforce or sustain the physiological well-being of a patient
  • synthetic geometry — elementary geometry, as distinct from analytic geometry.
  • teacher evaluation — the process of vetting teachers to maintain teaching standards
  • telephone receiver — a device, as in a telephone, that converts changes in an electric current into sound.
  • the bird has flown — the person in question has fled or escaped
  • the coast is clear — If you say that the coast is clear, you mean that there is nobody around to see you or catch you.
  • the dark continent — a term for Africa when it was relatively unexplored
  • the electronic age — the electronic age began when electronic equipment, including computers came into use
  • the first sea lord — the senior of the two serving naval officers who sits on the admiralty board of the Ministry of Defence
  • the grand national — an annual steeplechase run at Aintree, Liverpool, since 1839
  • the hotel industry — the branch of the services industry which provides hotels
  • the internationale — a revolutionary socialist hymn, first sung in 1871 in France
  • the kinetic theory — a theory of gases postulating that they consist of particles of negligible size moving at random and undergoing elastic collisions
  • the major rogation — April 25, observed by Christians as a day of solemn supplication for the harvest and marked by processions, special prayers, and blessing of the crops
  • the movie industry — the industry that makes entertainment films or movies
  • the nether regions — the genitals
  • the north atlantic — the northern part of the Atlantic Ocean, especially the waters separating North America and Europe
  • the northern irish — the people who live in or come from Northern Ireland
  • the operative word — If you describe a word as the operative word, you want to draw attention to it because you think it is important or exactly true in a particular situation.
  • the sun also rises — a novel (1926) by Ernest Hemingway.
  • the uncircumcision — the gentiles
  • the-cocktail-party — a play in verse (1950) by T. S. Eliot.
  • the-dark-continent — Africa: so called, especially during the 19th century, because little was known about it.
  • theodore gericault — (Jean Louis André) Théodore [zhahn lwee ahn-drey tey-aw-dawr] /ʒɑ̃ lwi ɑ̃ˈdreɪ teɪ ɔˈdɔr/ (Show IPA), 1791–1824, French painter.
  • there you go again — Phrases such as there you go again are used to show annoyance at someone who is repeating something that has annoyed you in the past.
  • there's no telling — You use there's no telling to introduce a statement when you want to say that it is impossible to know what will happen in a situation.
  • thermionic current — an electric current produced by the flow of thermions.
  • thermoluminescence — phosphorescence produced by the heating of a substance.
  • thin on the ground — If people or things of a particular kind are thin on the ground, there are very few of them.
  • think the world of — the earth or globe, considered as a planet.
  • thioarsenious acid — any of a group of hypothetical acids, H3AsS3, HAsS2, and H4As2S5, known only in the forms of their salts
  • thiosulphuric acid — an unstable acid known only in solutions and in the form of its salts. Formula: H2S2O3
  • thirty-second note — a note having 1/32 of the time value of a whole note; demi-semiquaver.
  • thirty-second rest — a rest equal in value to a thirty-second note.
  • thorfinn karlsefni — 980–after 1007, Icelandic navigator, explorer, and leader of early colonizing expedition to Vinland, in North America.
  • thought experiment — Physics. a demonstration or calculation that is based on the postulates of a theory, as relativity, and that demonstrates or clarifies the consequences of the postulates.
  • thrift-institution — economical management; economy; frugality.
  • throw in the towel — an absorbent cloth or paper for wiping and drying something wet, as one for the hands, face, or body after washing or bathing.
  • throw oneself into — to propel or cast in any way, especially to project or propel from the hand by a sudden forward motion or straightening of the arm and wrist: to throw a ball.
  • tip of the iceberg — a large floating mass of ice, detached from a glacier and carried out to sea.
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