21-letter words containing v, e, i, l, n
- 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.
- ultraviolet astronomy — the branch of astronomy that deals with celestial objects emitting electromagnetic radiation in the ultraviolet range.
- universal affirmative — a proposition of the form “All S is P.” Symbol: A, a.
- universal disk format — (storage, standard) (UDF) A CD-ROM file system standard that is required for DVD ROMs. UDF is the OSTA's replacement for the ISO 9660 file system used on CD-ROMs, but will be mostly used on DVD. DVD multimedia disks use UDF to contain MPEG audio and video streams. To read DVDs you need a DVD drive, the kernel driver for the drive, MPEG video support, and a UDF driver. DVDs containing both UDF filesystems and ISO 9660 filesystems can be read without UDF support. UDF can also be used by CD-R and CD-RW recorders in packet writing mode.
- 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.
- ventriloquist's dummy — a puppet which is operated by a ventriloquist and made to appear to talk
- venus's looking glass — a purple-flowered campanulaceous plant, Legousia hybrida, of Europe, W Asia, and N Africa
- vertically challenged — short in stature.
- virginia (rail) fence — a zigzag fence made of rails laid across one another at the ends
- 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.
- 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
- 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.
- west university place — a city in SE Texas.
- zero-emission vehicle — a vehicle, as an automobile, that does not directly produce atmospheric pollutants. Abbreviation: ZEV.