Meaning of gravity wave

grav'ity wave"

Pronunciation: [key]
  1. See
  2. a wave created by the action of gravity on local variations in the density of a stratified fluid, as the atmosphere, or at an interface between fluids of different density, as a liquid and a gas.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.