19-letter words containing n, o, r, e, v, c
- reciprocal leveling — leveling between two widely separated points in which observations are made in both directions to eliminate the effects of atmospheric refraction and the curvature of the earth.
- relative complement — the set of elements contained in a given set that are not elements of another specified set.
- republic of vietnam — the name (from 1955–75) for South Vietnam, as an independent republic, following the division of the country in 1954 into North Vietnam and South Vietnam
- reserved occupation — in time of war, an occupation from which one will not be called up for military service
- resistance movement — a movement fighting (for freedom, etc), often secretly or illegally, against an invader in an occupied country or against the country's government, etc
- reversible reaction — a reaction that, depending on ambient conditions, can proceed in either of two directions: the production of the reaction products from the reactants, or the production of the original reactants from the formed reaction products. Compare equilibrium (def 4).
- saturation coverage — news coverage (of an event, etc) that is very thorough in order not to miss any details
- sensitometric curve — characteristic curve.
- soviet central asia — the region of the former Soviet Union now occupied by Kazakhstan, Kyrgyzstan, Tajikistan, Turkmenistan, and Uzbekistan
- torricellian vacuum — the vacuum at the top of a Torricellian tube
- vaginal intercourse — intercourse involving insertion of the penis into the vagina
- 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 microphone — a microphone in which the output varies according to the instantaneous velocity of the air molecules in the incident sound waves.
- victor emmanuel iii — 1869–1947, king of Italy 1900–46.
- vinylidene chloride — a colorless, volatile, flammable liquid, C 2 H 2 Cl, that is copolymerized chiefly with vinyl chloride to form saran.
- volumetric analysis — determination of the concentration, by volume, of a substance in a solution, as by titration.
- young conservatives — the youth section of the United Kingdom Conservative Party until 1998