21-letter words containing o, u, p, i
- subjective complement — subject complement.
- subliminal perception — perception of or reaction to a stimulus that occurs without awareness or consciousness
- sun protection factor — SPF.
- supergranulation cell — one of a number of large convection cells in the photosphere and chromosphere of the sun, each having a diameter of 10,000–20,000 miles (16,000–32,000 km) and lasting longer than a day.
- supply-side economics — a school of economic thought that emphasizes the importance to a strong economy of policies that remove impediments to supply
- surface of projection — the surface upon which an image or a set of points is projected.
- symphonie fantastique — a programmatic symphony (1830–31) in five movements by Hector Berlioz.
- temperature inversion — inversion (def 12).
- tenure track position — a position or office that carries with it the opportunity to eventually obtain tenure or the right to permanent employment
- therapeutic community — a group-based form of therapy for mental disorders, sometimes residential
- thermoelectric couple — thermocouple.
- third party procedure — impleader.
- to be mixed up in sth — if you are mixed up in something, usually something bad, you are involved in it
- to be public property — to be publicly owned
- to mix your metaphors — If you mix your metaphors, you use two conflicting metaphors. People do this accidentally, or sometimes deliberately as a joke.
- to put the wind up sb — If something or someone puts the wind up you, they frighten or worry you.
- to put you in mind of — If something puts you in mind of something else, it reminds you of it because it is similar to it or is associated with it.
- triple superphosphate — superphosphate (def 2).
- triple-superphosphate — Also called acid phosphate. a mixture of calcium acid phosphate and calcium sulfate prepared by treating phosphate rock with sulfuric acid: used chiefly as a fertilizer.
- ulster unionist party — a Northern Irish political party advocating the maintenance of union with the UK
- up hill and down dale — strenuously and persistently
- up to the elbows with — busily occupied with; deeply immersed in
- whip-and-tongue graft — a graft prepared by cutting both the scion and the stock in a sloping direction and inserting a tongue in the scion into a slit in the stock.
- window of opportunity — limited chance to do sth
- writ of habeas corpus — law: petition for hearing
- xeroderma pigmentosum — a rare inherited disease characterized by sensitivity to ultraviolet light, exposure resulting in lesions and tumors of the skin and eyes.