16-letter words containing u, r, i, e, l
- 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.
- 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.
- water lily tulip — a showy tulip, Tulipa kaufmanniana, of Turkestan, having spreading, white or pale-yellow flowers with yellow centers streaked with red.
- well-articulated — made clear or distinct: articulated sounds.
- well-illustrated — containing pictures, drawings, and other illustrations: an illustrated book.
- wheelchair-bound — unable to walk through injury, illness, etc and relying on a wheelchair to move around
- whited sepulcher — an evil person who feigns goodness; hypocrite. Matt. 23:27.
- whited sepulchre — hypocrite
- worth your while — If an action or activity is worth someone's while, it will be helpful, useful, or enjoyable for them if they do it, even though it requires some effort.
- yellow underwing — any of several species of noctuid moths (Noctua and Anarta species), the hind wings of which are yellow with a black bar
- zollner illusion — a spatial illusion in which parallel lines intersected by short oblique lines are perceived as converging or diverging.