16-letter words containing r, e, v, u, l
- vinylidene group — the bivalent group C 2 H 2 , derived from ethylene.
- virtual particle — an elementary particle of transitory existence that does not appear as a free particle in a particular situation but that can transmit a force from one particle to another.
- visible spectrum — the range of wavelengths of electromagnetic radiation that is normally visible, from 380 to 760 nm.
- visual interface — (tool, text) (vi) /V-I/, /vi:/, *never* /siks/ A screen editor crufted together by Bill Joy for an early BSD release. vi became the de facto standard Unix editor and a nearly undisputed hacker favourite outside of MIT until the rise of Emacs after about 1984. It tends to frustrate new users no end, as it will neither take commands while expecting input text nor vice versa, and the default setup provides no indication of which mode the editor is in (one correspondent accordingly reports that he has often heard the editor's name pronounced /vi:l/). Nevertheless it is still widely used (about half the respondents in a 1991 Usenet poll preferred it), and even some Emacs fans resort to it as a mail editor and for small editing jobs (mainly because it starts up faster than the bulkier versions of Emacs). See holy wars.
- vocabulary entry — (in dictionaries) a word, phrase, abbreviation, symbol, affix, name, etc., listed with its definition or explanation in alphabetical order or listed for identification after the word from which it is derived or to which it is related.
- voluntary helper — a person who aids or assists in a specified function of one's own accord and without compulsion or promise of remuneration
- voluntary muscle — muscle whose action is normally controlled by an individual's will; mainly skeletal muscle, composed of parallel bundles of striated, multinucleate fibers.
- voluntary sector — the part of the economy that consists of non-profit-making organizations, as opposed to the public and private sectors
- voluntary worker — a person who serves or acts in a specified function of their own accord and without compulsion or promise of remuneration
- volunteer bureau — an agency that matches up people wishing to do voluntary work with appropriate voluntary organizations
- vulcanized fiber — a leatherlike substance made by compression of layers of paper or cloth that have been treated with acids or zinc chloride, used chiefly for electric insulation.