- to oscillate or move from side to side or between two points.
- to remain poised or balanced.
Origin of librate
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for librate
In this epicycle he was not supposed to revolve, but to librate, or move up and down in its diameter.The Life of Galileo Galilei, with Illustrations of the Advancement of Experimental Philosophy
John Elliot Drinkwater Bethune
- to oscillate or waver
- to hover or be balanced
C17: back formation from libration
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012