21-letter words containing nc
- turn state's evidence — If someone who is accused of a crime turns state's evidence, they agree to give evidence in a law court against another person such as a former accomplice, usually in exchange for a reduced sentence for themselves.
- uncertainty principle — the principle of quantum mechanics, formulated by Heisenberg, that the accurate measurement of one of two related, observable quantities, as position and momentum or energy and time, produces uncertainties in the measurement of the other, such that the product of the uncertainties of both quantities is equal to or greater than h/ 2 π, where h equals Planck's constant.
- virginia (rail) fence — a zigzag fence made of rails laid across one another at the ends
- volumetric efficiency — the ratio of fluid delivered by a piston or ram pump per stroke to the displacement volume of the piston or ram
- vote of no confidence — A vote of no confidence is a vote in which members of a group are asked to indicate that they do not support the person or group in power, usually the government.
- warm silence software — A small company run by(?) Robin Watts, producing software for the Acorn Archimedes.
- xfree86 project, inc. — (operating system, graphics) A non-profit organisation that produces XFree86, a freely redistributable implementation of the X Window System that runs on Unix and Unix-like operating systems and OS/2. The XFree86 Project has traditionally focused on Intel x86 based platforms (hence the "86"), but the current release supports other platforms.
- zedillo ponce de leon — Ernesto, born 1951, president of Mexico 1994–2000.