grav'ity wave"

1. Astron., Physics.See gravitational wave.
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.

gravity railroadgravity wind
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