15-letter words containing r, o, i, d
- securicor guard — a guard who works for Securicor
- seidlitz powder — a laxative consisting of two powders, tartaric acid and a mixture of sodium bicarbonate and Rochelle salt (sodium potassium tartrate)
- self-admiration — a feeling of wonder, pleasure, or approval.
- self-authorized — given or endowed with authority: an authorized agent.
- self-disclosure — the act or an instance of disclosing; exposure; revelation.
- self-proclaimed — to announce or declare in an official or formal manner: to proclaim war.
- self-production — produced by oneself or itself.
- semidocumentary — a film or television programme that is fictional but includes many factual events or details
- serendipitously — come upon or found by accident; fortuitous: serendipitous scientific discoveries.
- shadow minister — a member of the main opposition party in Parliament who would hold ministerial office if their party were in power
- shopping arcade — a place where a number of shops are connected together under one roof
- shortwave radio — a radio that transmits or receives shortwaves.
- shoulder girdle — pectoral girdle (def 2).
- shroud of turin — a linen cloth kept in the Cathedral of Turin, Italy, since the late 1500s that bears a faint life-size human image venerated by some as the imprint of the dead body of Jesus.
- sidereal period — the period of revolution of a body about another with respect to one or more distant stars
- sigmoid flexure — Zoology. an S -shaped curve in a body part.
- silicon carbide — a very hard, insoluble, crystalline compound, SiC, used as an abrasive and as an electrical resistor in objects exposed to high temperatures.
- silver chloride — a white, granular, water-insoluble powder, AgCl, that darkens on exposure to light, produced by the reaction of silver nitrate with a chloride: used chiefly in the manufacture of photographic emulsions and in the making of antiseptic silver preparations.
- silver fluoride — a yellow or brownish, crystalline, water-soluble, hygroscopic solid, AgF, used chiefly as an antiseptic and disinfectant.
- silver quandong — an Australian tree, Elaeocarpus grandis: family Elaeocarpaceae
- sinistrodextral — moving or extending from the left to the right.
- sinoatrial node — a small mass of tissue in the right atrium functioning as pacemaker of the heart by giving rise to the electric impulses that initiate heart contractions.
- sit-down strike — a strike during which workers occupy their place of employment and refuse to work or allow others to work until the strike is settled.
- sled cultivator — go-devil (def 5).
- slide projector — device for showing slides
- smoking-related — (of a disease, illness, etc) caused by smoking tobacco, etc
- sneezing powder — a powder used to make people sneeze as a practical joke
- social democrat — a person who advocates a gradual transition to socialism or a modified form of socialism by and under democratic political processes.
- social drinking — the practice of drinking alcohol occasionally and usually only in social situations
- social-drinking — a person who drinks alcoholic beverages usually in the company of others and is in control of his or her drinking.
- socratic method — the use of questions, as employed by Socrates, to develop a latent idea, as in the mind of a pupil, or to elicit admissions, as from an opponent, tending to establish a proposition.
- sodium arsenite — a white or grayish-white, water-soluble, poisonous powder, NaAsO 2 , used chiefly in arsenical soaps for hides, as an insecticide, and as a weed-killer.
- sodium chlorate — a colorless, water-soluble solid, NaClO 3 , cool and salty to the taste, used chiefly in the manufacture of explosives and matches, as a textile mordant, and as an oxidizing and bleaching agent.
- sodium chloride — salt1 (def 1).
- sodium citrates — the sodium salts of citric acid (monosodium citrate, disodium citrate, trisodium citrate)
- sodium fluoride — a colorless, crystalline, water-soluble, poisonous solid, NaF, used chiefly in the fluoridation of water, as an insecticide, and as a rodenticide.
- sodium peroxide — a yellowish-white, hygroscopic, water-soluble powder, Na 2 O 2 , used chiefly as a bleaching agent and as an oxidizing agent.
- sodium stearate — Sodium stearate is a salt of stearic acid used as a surfactant (= a substance that reduces the surface tension of a liquid and allows it to foam) in order to aid the solubility of hydrophobic substances in oral medicines.
- solar radiation — energy radiated from the sun in the form of electromagnetic waves, including visible and ultraviolet light and infrared radiation.
- soldier's heart — cardiac neurosis.
- soldier's medal — a medal awarded to any member of the Army of the United States, or of any military organization serving with it, who distinguishes himself or herself by heroism not involving conflict with an enemy.
- somerset island — an island in the Arctic Ocean in Nunavut, Canada, NW of Baffin Island. 9594 sq. mi. (24,848 sq. km).
- soul-destroying — Activities or situations that are soul-destroying make you depressed, because they are boring or because there is no hope of improvement.
- sound recordist — recordist.
- sounding rocket — a rocket equipped with instruments for making meteorological observations in the upper atmosphere.
- spawning ground — a place where fish deposit their eggs for fertilization
- speech disorder — an inability to produce normal speech
- speed indicator — an instrument for counting the number of revolutions of a gasoline engine.
- sphaerosiderite — a type of siderite
- spheroidization — the conversion of grains into spheroids