18-letter words containing t, i, r, o, l
- 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.
- spherical geometry — the branch of geometry that deals with figures on spherical surfaces.
- 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
- 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
- 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
- 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).
- super giant slalom — a slalom race in which the course is longer and has more widely spaced gates than in a giant slalom.
- supraorbital ridge — browridge.
- teacher evaluation — the process of vetting teachers to maintain teaching standards
- tectorial membrane — membrane in the inner ear that covers the organ of Corti
- telephone receiver — a device, as in a telephone, that converts changes in an electric current into sound.
- telford and wrekin — a unitary authority in W Central England, in Shropshire. Pop: 160 300 (2003 est). Area: 289 sq km (112 sq miles)
- temporal summation — the act or process of summing.
- tender loving care — considerate and kindly care, as of someone who is ill, upset, etc
- territorial waters — law: nation's boundaries
- territorialization — to extend by adding new territory.
- 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 electronic age — the electronic age began when electronic equipment, including computers came into use
- the first sea lord — the senior of the two serving naval officers who sits on the admiralty board of the Ministry of Defence
- the grand national — an annual steeplechase run at Aintree, Liverpool, since 1839
- the hotel industry — the branch of the services industry which provides hotels
- the internationale — a revolutionary socialist hymn, first sung in 1871 in France
- the north atlantic — the northern part of the Atlantic Ocean, especially the waters separating North America and Europe
- the sun also rises — a novel (1926) by Ernest Hemingway.
- the-cocktail-party — a play in verse (1950) by T. S. Eliot.
- theodore gericault — (Jean Louis André) Théodore [zhahn lwee ahn-drey tey-aw-dawr] /ʒɑ̃ lwi ɑ̃ˈdreɪ teɪ ɔˈdɔr/ (Show IPA), 1791–1824, French painter.
- 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.
- think the world of — the earth or globe, considered as a planet.
- thiosulphuric acid — an unstable acid known only in solutions and in the form of its salts. Formula: H2S2O3
- thorfinn karlsefni — 980–after 1007, Icelandic navigator, explorer, and leader of early colonizing expedition to Vinland, in North America.
- throw in the towel — an absorbent cloth or paper for wiping and drying something wet, as one for the hands, face, or body after washing or bathing.
- throw oneself into — to propel or cast in any way, especially to project or propel from the hand by a sudden forward motion or straightening of the arm and wrist: to throw a ball.
- to a grinding halt — If you describe a bad situation as grinding, you mean it never gets better, changes, or ends.