n. 1 the act or an instance of vibrating; oscillation. 2 Physics (esp. rapid) motion to and fro esp. of the parts of a fluid or an elastic solid whose equilibrium has been disturbed or of an electromagnetic wave. 3 (in pl.) a a mental (esp. occult) influence. b a characteristic atmosphere or feeling in a place, regarded as communicable to people present in it. vibrational adj.
[ L vibratio (as VIBRATE) ]