n 1 a  :  a periodic motion of the particles of an elastic body or medium in alternately opposite directions from the position of equilibrium when that equilibrium has been disturbed (as when particles of air transmit sounds to the ear)  b  :  the action of vibrating  :  the state of being vibrated or in vibratory motion  2  :  an instance of vibration vi*brate vb vi*brat*ed  vi*brat*ing  vi*bra*tion*al adj 
 
 
 
Published under license with Merriam-Webster, Incorporated.  © 1997-2024.