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

  • 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.
  • spirits of ammonia — a 10% solution of ammonia in alcohol
  • split-level cooker — a cooker that is designed with a separate oven and hob so that they can be fitted wherever is most convenient in the kitchen
  • squinting modifier — a word or phrase that can modify either the words that precede it or those that follow, as frequently in the sentence Studying frequently is tedious.
  • standard deviation — a measure of dispersion in a frequency distribution, equal to the square root of the mean of the squares of the deviations from the arithmetic mean of the distribution.
  • standard of living — a grade or level of subsistence and comfort in everyday life enjoyed by a community, class, or individual: The well-educated generally have a high standard of living.
  • standoff insulator — a type of insulator that supports an electrical conductor at a distance from other elements or surfaces.
  • stationary bicycle — an exercise bike
  • statutory sick pay — the pay an employee is legally entitled to when sick
  • steering committee — a committee, especially of a deliberative or legislative body, charged with preparing the agenda of a session.
  • steller's sea lion — any of several large eared seals, as Eumetopias jubatus (Steller's sea lion) of the northern Pacific, and Zalophus californicus (California sea lion) of the Pacific coast of North America.
  • stirling's formula — a relation that approximates the value of n factorial (n!), expressed as .
  • 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.
  • strait of magellan — a strait between the mainland of S South America and Tierra del Fuego, linking the S Pacific with the S Atlantic. Length: 600 km (370 miles). Width: up to 32 km (20 miles)
  • straits of florida — a sea passage between the Florida Keys and Cuba, linking the Atlantic with the Gulf of Mexico
  • 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
  • strong derived set — the set of all strong accumulation points of a given set.
  • strong interaction — the interaction between gluons and between gluons and quarks that is responsible for the strong force.
  • strontium monoxide — a white insoluble solid substance used in making strontium salts and purifying sugar. Formula: SrO
  • student councillor — a student who is a member of a council or body representing the interests of students at a school, university or college
  • subatomic particle — physics:
  • subordinate clause — a clause that modifies the principal clause or some part of it or that serves a noun function in the principal clause, as when she arrived in the sentence I was there when she arrived or that she has arrived in the sentence I doubt that she has arrived.
  • sugarloaf mountain — a mountain in SE Brazil in Rio de Janeiro, at the entrance to Guanabara Bay. 1280 feet (390 meters).
  • sun-dried tomatoes — tomatoes that have been dried or preserved by exposure to the sun
  • super giant slalom — a slalom race in which the course is longer and has more widely spaced gates than in a giant slalom.
  • 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.
  • supporting actress — an actress playing a supporting role
  • supportive therapy — any treatment, such as the intravenous administration of certain fluids, designed to reinforce or sustain the physiological well-being of a patient
  • supraorbital ridge — browridge.
  • sustaining program — a radio or television program without a commercial sponsor.
  • symmetric function — a polynomial in several indeterminates that stays the same under any permutation of the indeterminates.
  • synthetic geometry — elementary geometry, as distinct from analytic geometry.
  • system-programming — a program, as an operating system, compiler, or utility program, that controls some aspect of the operation of a computer (opposed to application program).
  • take out insurance — take out insurance against something
  • temporal summation — the act or process of summing.
  • territorial waters — law: nation's boundaries
  • 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 first sea lord — the senior of the two serving naval officers who sits on the admiralty board of the Ministry of Defence
  • the hotel industry — the branch of the services industry which provides hotels
  • the movie industry — the industry that makes entertainment films or movies
  • the nether regions — the genitals
  • the northern irish — the people who live in or come from Northern Ireland
  • the sun also rises — a novel (1926) by Ernest Hemingway.
  • the uncircumcision — the gentiles
  • 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.
  • thermoluminescence — phosphorescence produced by the heating of a substance.
  • 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
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