n.
Pronunciation: ˌ ə n-j ə - ' l ā -sh ə n, ˌ ə n-dy ə -, ˌ ə n-d ə -
Function: noun
Date: 1646
1 a : a rising and falling in waves b : a wavelike motion to and fro in a fluid or elastic medium propagated continuously among its particles but with little or no permanent translation of the particles in the direction of the propagation : VIBRATION
2 : the pulsation caused by the vibrating together of two tones not quite in unison
3 : a wavy appearance, outline, or form : WAVINESS