21-letter words containing c, a, p, i, o, u
- 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.
- surface of projection — the surface upon which an image or a set of points is projected.
- 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
- third party procedure — impleader.
- writ of habeas corpus — law: petition for hearing