19-letter words containing a, c, u, i, t, y
- reciprocity failure — a failure of the two exposure variables, light intensity and exposure time, to behave in a reciprocal fashion at very high or very low values
- reticulated tracery — tracery consisting in large part of a netlike arrangement of repeated geometrical figures.
- rocky mountain goat — a long-haired, white, antelopelike wild goat, Oreamnos americanus, of mountainous regions of western North America, having short, black horns.
- secondary education — education at high-school level
- secondary qualities — one of the qualities attributed by the mind to an object perceived, such as color, temperature, or taste.
- senatorial courtesy — the practice in the U.S. Senate of confirming only those presidential appointees approved by both senators from the state of the appointee, or by the senior senator of the president's party.
- smokestack industry — A smokestack industry is a traditional industry such as heavy engineering or manufacturing, rather than a modern industry such as electronics.
- social security act — a law passed in 1935 providing old-age retirement insurance, a federal-state program of unemployment compensation, and federal grants for state welfare programs.
- stationery cupboard — a cupboard where things like paper, pens and paper clips are kept
- to change your mind — If you change your mind, or if someone or something changes your mind, you change a decision you have made or an opinion that you had.
- to rack your brains — If you rack your brains, you try very hard to think of something.
- ultrahigh frequency — any frequency between 300 and 3000 megahertz. Abbreviation: UHF, uhf.
- ultramicrochemistry — the branch of microchemistry dealing with minute quantities of material weighing one microgram or less.
- unconstitutionality — not constitutional; unauthorized by or inconsistent with the constitution, as of a country.
- university entrance — an examination taken by pupils of postprimary schools
- valencian community — region comprising three provinces of E Spain: 8,998 sq mi (23,305 sq km); pop. 4,029,000; cap. Valencia
- vapor recovery unit — A vapor recovery unit is a system for recovering vapors from inside sealed crude oil or condensate tanks, with a scrubber (= a device for removing unwanted substances) and compressor (= a device that raises pressure).
- velocity modulation — the modulation in velocity of a beam of electrons or ions caused by passing the beam through a high-frequency electric field, as in a cavity resonator
- volumetric analysis — determination of the concentration, by volume, of a substance in a solution, as by titration.
- what-do-you-call-it — whachamacallit.
- young conservatives — the youth section of the United Kingdom Conservative Party until 1998