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

  • self-comprehending — to understand the nature or meaning of; grasp with the mind; perceive: He did not comprehend the significance of the ambassador's remark.
  • self-contradiction — an act or instance of contradicting oneself or itself.
  • self-contradictory — an act or instance of contradicting oneself or itself.
  • self-determination — determination by oneself or itself, without outside influence.
  • sense of direction — Your sense of direction is your ability to know roughly where you are, or which way to go, even when you are in an unfamiliar place.
  • september holidays — a period of time in September when people do not have to go to school, college or work
  • sex discrimination — the practice of treating male and female people unequally
  • shift one's ground — to change one's argument or defense
  • shop till you drop — If you shop till you drop, you do a large amount of shopping.
  • short-tailed shrew — a grayish-black shrew, Blarina brevicauda, common in eastern North America, that has a tail less than half the length of the body.
  • simone de beauvoir — Simone [see-mawn] /siˈmɔn/ (Show IPA), (Lucie Ernestine Marie Bertrand) 1908–86, French playwright, novelist, and essayist.
  • sinclair radionics — Sinclair Research
  • sindbad the sailor — (in The Arabian Nights' Entertainments), a wealthy citizen of Baghdad who relates the adventures of his seven wonderful voyages.
  • skin friction drag — aerodynamic resistance or drag due to the contact of moving air with the surface of an airplane, a glider, etc.
  • slim hole drilling — Slim hole drilling is drilling a well in which at least 90 percent of the hole has a diameter of seven inches or less.
  • society of friends — a Christian denomination, founded in England c. 1650 by George Fox, that has no formal creed, liturgy, or priesthood and rejects violence in human relations, esp. warfare
  • soda-lime feldspar — plagioclase.
  • sodium bicarbonate — a white, crystalline, water-soluble solid, in powder or granules, NaHCO 3 , usually prepared by the reaction of soda ash with carbon dioxide or obtained from the intermediate product of the Solvay process by purification: used chiefly in the manufacture of sodium salts, baking powder, and beverages, as a laboratory reagent, as a fire extinguisher, and in medicine as an antacid.
  • sodium tetraborate — borax1 .
  • sodium-vapour lamp — a type of electric lamp consisting of a glass tube containing neon and sodium vapour at low pressure through which an electric current is passed to give an orange light. They are used in street lighting
  • soldier of fortune — a person who independently seeks pleasure, wealth, etc., through adventurous exploits.
  • soldier settlement — the allocation of Crown land for farming to ex-servicemen
  • solitary sandpiper — a North American sandpiper, Tringa solitaria, of inland wetlands, having a brownish-gray, white-spotted back and whitish underparts.
  • solubility product — the maximum number of undissociated ions, of an electrolyte in a saturated solution, capable at a given temperature of remaining in equilibrium with the undissolved phase of the solution.
  • song without words — a song which only consists of a tune or melody and does not have any lyrics
  • 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).
  • spread one's wings — to make full use of one's abilities
  • 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.
  • 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.
  • 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
  • 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.
  • subsidiary company — a company whose controlling interest is owned by another company.
  • summary proceeding — a mode of trial authorized by statute to be held before a judge without the usual full hearing.
  • sun-dried tomatoes — tomatoes that have been dried or preserved by exposure to the sun
  • sunflower seed oil — the oil extracted from sunflower seeds, used as a salad oil, in the manufacture of margarine, etc
  • supraorbital ridge — browridge.
  • the bird has flown — the person in question has fled or escaped
  • 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
  • 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.
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