21-letter words containing s, t, i, g, m
- spin angular momentum — to make (yarn) by drawing out, twisting, and winding fibers: Pioneer women spun yarn on spinning wheels.
- stem-and-leaf diagram — a histogram in which the data points falling within each class interval are listed in order
- strategic air command — a U.S. Air Force command charged with intercontinental air strikes, especially nuclear attacks.
- swim against the tide — to resist prevailing opinion
- tape operating system — (operating system) (TOS) An IBM operating system for System 360, used in the early days around 1965 to support the IBM 360 model 30 et al. TOS was a predecessor to IBM's Disk Operating System. TOS died out really early as disks such as the 2311 and 2314 became common with the IBM 360 whereas thet had been a real luxury on the IBM 7090.
- to lay something bare — If you lay something bare, you uncover it completely so that it can then be seen.
- tsutsugamushi disease — scrub typhus.
- tubercular meningitis — an infection of the membranes of the central nervous system caused by the bacterium Mycobacterium tuberculosis; features can include fever, headache, and coma
- vladivostok agreement — a preliminary arms control accord concluded by Soviet leader Leonid Brezhnev and U.S. President Gerald Ford in Vladivostok, U.S.S.R., in December 1974.
- weinberg-salam theory — electroweak theory.
- what price something? — what are the chances of something happening now?
- xeroderma pigmentosum — a rare inherited disease characterized by sensitivity to ultraviolet light, exposure resulting in lesions and tumors of the skin and eyes.
- youth training scheme — (formerly, in Britain) a scheme, run by the Training Agency, to provide vocational training for unemployed 16–17-year-olds