21-letter words containing a, m, p, l, i, t
- special court-martial — a court-martial established to try violations of military law less serious than those tried by a general court-martial but more serious than those tried by a summary court-martial.
- spin angular momentum — to make (yarn) by drawing out, twisting, and winding fibers: Pioneer women spun yarn on spinning wheels.
- splice the main brace — to join together or unite (two ropes or parts of a rope) by the interweaving of strands.
- stock list department — (in an American stock exchange) the department dealing with monitoring compliance with its listing requirements and rules
- subliminal perception — perception of or reaction to a stimulus that occurs without awareness or consciousness
- supplementary benefit — (formerly) an extra amount of money that is paid to someone by the government, in addition to their normal income. Replaced by income support in 1988
- thermal decomposition — Thermal decomposition is the process in which a chemical species breaks down when its temperature is increased.
- thermal power station — a power station in which heat is converted into electricity