18-letter words containing r, e, c, t, i, s
- semiprecious stone — See at semiprecious.
- senior aircraftman — a rank in the Royal Air Force comparable to that of a private in the army, though not the lowest rank in the Royal Air Force
- 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.
- septic sore throat — an acute, toxic, streptococcus infection of the throat producing fever, tonsillitis, and other serious effects.
- service department — a repair shop
- sex discrimination — the practice of treating male and female people unequally
- sexual intercourse — genital contact, especially the insertion of the penis into the vagina followed by orgasm; coitus; copulation.
- shipping container — a large, strong container, usually of metal, used to store goods in during shipment
- shotgun microphone — a directional microphone with a narrow-angle range of sensitivity.
- shugart associates — (company) The disk drive company, founded by Alan F. Shugart, which developed SCSI. Alan left Shugart Associates in 1974 [did he quit or was he fired?]. Shugart Associates was bought, and eventually shut down by Xerox.
- sildenafil citrate — a white crystalline powder, C 22 H 30 N 6 O 4 S, that temporarily normalizes erectile function of the penis by blocking an enzyme known to inhibit the production of a chemical that causes erections: used in the form of a pill to treat impotence.
- silver certificate — a former paper currency first issued in 1878 by the U.S. federal government for circulation, equal to and redeemable for silver to a stated value.
- six-finger country — an isolated area considered as being inhabited by people who practise inbreeding
- 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
- sling psychrometer — a psychrometer so designed that the wet-bulb thermometer can be ventilated, to expedite evaporation, by whirling in the air.
- 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
- 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
- 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.
- solvent extraction — Solvent extraction is the separation of a particular substance from a mixture by dissolving that substance in a solvent that will dissolve it, but which will not dissolve any other substance in the mixture.
- sonic depth finder — a sonar instrument that uses echolocation to measure depths under water.
- special prosecutor — (formerly) an independent counsel.
- special relativity — the state or fact of being relative.
- specialist teacher — a teacher with expertise in working with children with special educational needs, such as dyslexia
- specimen signature — a signature to be compared to an original signature in order to verify someone's identity
- 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.
- 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
- 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.
- spectropolariscope — an instrument combining the functions of a spectroscope with those of a polariscope.
- 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.
- speech synthesizer — device that imitates human voice
- sperry corporation — (company) The company which merged with the Burroughs Corporation to form Unisys Corporation. Divisions included Sperry Univac, Sperry Flight Systems, and others. Some of these were sold off after the merger.
- spherical geometry — the branch of geometry that deals with figures on spherical surfaces.
- spherical triangle — a triangle formed by arcs of great circles of a sphere.
- 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
- squirting cucumber — a Mediterranean plant, Ecballium elaterium, of the gourd family, whose ripened fruit forcibly ejects the seeds and juice.
- st. lawrence river — a river in SE Canada, flowing NE from Lake Ontario, forming part of the boundary between New York and Ontario, and emptying into the Gulf of St. Lawrence. 760 miles (1225 km) long.
- static electricity — a stationary electric charge built up on an insulating material.
- stationary bicycle — an exercise bike
- steering committee — a committee, especially of a deliberative or legislative body, charged with preparing the agenda of a session.
- 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
- street certificate — a certificate showing ownership of a specified number of shares of stock: endorsed by the owner and guaranteed by a broker, it may be traded without formal transfer on the books of the corporation issuing the stock.
- street credibility — street cred.
- strong interaction — the interaction between gluons and between gluons and quarks that is responsible for the strong force.
- 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.