21-letter words containing n, o, c, i, v, l
- the central provinces — the Canadian provinces of Ontario and Quebec
- topological invariant — a property of a topological space that is a property of every space related to the given space by a homeomorphism.
- twelve-tone technique — a modern system of tone relationships in which the 12 tones of an octave are not centered around any one tone, but are unified by a selected order of tones for a given composition.
- university of iceland — (body, education) The Home of Fjolnir.
- vacation bible school — a religious school conducted by some churches during the summer for students on vacation.
- voice-stress analyzer — a machine purported to detect stress in a human voice and to ascertain a person's truthfulness.
- volumetric efficiency — the ratio of fluid delivered by a piston or ram pump per stroke to the displacement volume of the piston or ram
- voluntary association — a group of individuals joined together on the basis of mutual interest or common objectives, especially a business group that is not organized or constituted as a legal entity.
- volunteers of america — a religious reform and relief organization, similar to the Salvation Army, founded in New York City in 1896 by Ballington Booth, son of William Booth, the founder of the Salvation Army. Abbreviation: VOA.
- zero-emission vehicle — a vehicle, as an automobile, that does not directly produce atmospheric pollutants. Abbreviation: ZEV.