18-letter words containing p, i, t, h, o, s
- sodium hyposulfite — sodium thiosulfate.
- something to spare — a surplus of something
- sonic depth finder — a sonar instrument that uses echolocation to measure depths under water.
- southampton island — an island in N Canada, in the Northwest Territories at the entrance to Hudson Bay. 19,100 sq. mi. (49,470 sq. km).
- spaghetti junction — an interchange, usually between motorways, in which there are a large number of underpasses and overpasses and intersecting roads used by a large volume of high-speed traffic
- 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
- 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.
- spherical geometry — the branch of geometry that deals with figures on spherical surfaces.
- spike-tooth harrow — a harrow equipped with straight teeth on horizontal bars, usually employed to smooth and level plowed soil or seedbeds for planting or sowing.
- superstring theory — any supersymmetric string theory in which each type of elementary particle is treated as a vibration of a single fundamental string (superstring) at a particular frequency.
- supportive therapy — any treatment, such as the intravenous administration of certain fluids, designed to reinforce or sustain the physiological well-being of a patient
- systematic phoneme — a phonological unit in generative phonology representing an underlying form that takes into account the relationship between phonological patterns and morphological variation, as the unit underlying the second vowel in both derive and derivative.
- telephone sex line — a telephone line operated by a phone-sex worker that offers phone sex to paying customers
- the bottomless pit — the underworld; hell
- the encyclopedists — the writers of the French Encyclopedia (1751-72) edited by Diderot and d'Alembert, which contained the advanced ideas of the period
- thiosulphuric acid — an unstable acid known only in solutions and in the form of its salts. Formula: H2S2O3
- to lick into shape — If you lick, knock, or whip someone or something into shape, you use whatever methods are necessary to change or improve them so that they are in the condition that you want them to be in.
- to pick and choose — If you pick and choose, you carefully choose only things that you really want and reject the others.
- to spill the beans — If you spill the beans, you tell someone something that people have been trying to keep secret.
- to stop at nothing — If you say that someone will stop at nothing to get something, you are emphasizing that they are willing to do things that are extreme, wrong, or dangerous in order to get it.
- triphosphoric acid — the hypothetical acid H 5 P 3 O 10 , known chiefly by its salts.
- warehouse capacity — the amount of storage space in a warehouse
- white iron pyrites — marcasite
- white-spotted hyla — a type of tree frog (H. leucophyllata) of tropical America
- wireless telephone — Now Rare. radiotelephony.
- wireless telephony — Now Rare. radiotelephony.
- withdrawal symptom — effects of stopping a drug
- working hypothesis — See under hypothesis (def 1).