18-letter words containing m, o, i, r
- senior common room — (in British universities, colleges, etc) a common room for the use of academic staff
- 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
- shoot from the hip — the act of shooting with a bow, firearm, etc.
- shotgun microphone — a directional microphone with a narrow-angle range of sensitivity.
- simone de beauvoir — Simone [see-mawn] /siˈmɔn/ (Show IPA), (Lucie Ernestine Marie Bertrand) 1908–86, French playwright, novelist, and essayist.
- simple enumeration — a procedure for arriving at empirical generalizations by haphazard accumulation of positive instances.
- sixth-form college — (in England and Wales) a college offering A-level and other courses to pupils over sixteen from local schools, esp from those that do not have sixth forms
- ski-mountaineering — a combination of the sports of skiing and mountaineering, for example by climbing up a mountain then skiing down it
- 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.
- sling psychrometer — a psychrometer so designed that the wet-bulb thermometer can be ventilated, to expedite evaporation, by whirling in the air.
- slow-motion replay — a showing again in slow motion of a sequence of action, esp of part of a sporting contest immediately after it happens
- small claims court — a special court established to handle small claims or debts, usually without the services of lawyers.
- small-claims court — a special court established to handle small claims or debts, usually without the services of lawyers.
- smooth fox terrier — a breed of short-haired fox terrier with a mostly white, smooth coat.
- social bookmarking — the practice of saving bookmarked Web pages to a public website as a way to share the links with other Internet users: Social bookmarking is a tool that allows you to add tags and comments to your bookmarks.
- social environment — the environment developed by humans as contrasted with the natural environment; society as a whole, especially in its relation to the individual.
- societal marketing — marketing that takes into account society's long-term welfare
- 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 settlement — the allocation of Crown land for farming to ex-servicemen
- solomon rabinowitz — Solomon, Aleichem, Sholom.
- something or other — sth not remembered precisely
- something to spare — a surplus of something
- spectrocolorimetry — the quantitative measure of colors by spectrophotometry.
- spectrofluorimeter — an instrument in which the spectrum of secondarily emitted fluorescent light is used to identify chemical compounds.
- spectropolarimeter — an instrument for determining the extent to which plane-polarized light of various wavelengths is rotated by certain solutions, consisting of a combination of a spectroscope and a polarimeter.
- spherical geometry — the branch of geometry that deals with figures on spherical surfaces.
- spirits of ammonia — a 10% solution of ammonia in alcohol
- 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.
- steering committee — a committee, especially of a deliberative or legislative body, charged with preparing the agenda of a session.
- 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)
- strontium monoxide — a white insoluble solid substance used in making strontium salts and purifying sugar. Formula: SrO
- subatomic particle — physics:
- subsidiary company — a company whose controlling interest is owned by another company.
- sugarloaf mountain — a mountain in SE Brazil in Rio de Janeiro, at the entrance to Guanabara Bay. 1280 feet (390 meters).
- 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
- super giant slalom — a slalom race in which the course is longer and has more widely spaced gates than in a giant slalom.
- 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).
- tectorial membrane — membrane in the inner ear that covers the organ of Corti
- temporal summation — the act or process of summing.