Also called pendulum law. Physics. a law, discovered by Galileo in 1602, that describes the regular, swinging motion of a pendulum by the action of gravity and acquired momentum.
the theory holding that trends in culture, politics, etc., tend to swing back and forth between opposite extremes.
noun 1. (formerly) a watch having a balance wheel, especially a balance wheel bearing a fake pendulum bob oscillating behind a window in the dial.
1. a combining form meaning “almost,” used in the formation of compound words: penecontemporaneous. prefix 1. almost: peneplain
[pee-nee-kuh n-tem-puh-rey-nee-uh s] /ˌpi ni kənˌtɛm pəˈreɪ ni əs/ adjective, Geology. 1. formed during or shortly after the formation of the containing rock stratum: penecontemporaneous minerals.
[pee-nyaws] /piˈnyɔs/ noun 1. Modern Greek name of .