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Dictionary

earth•quake

Pronunciation: (ûrth'kwāk"), [key]
—n.
1. a series of vibrations induced in the earth's crust by the abrupt rupture and rebound of rocks in which elastic strain has been slowly accumulating.
2. something that is severely disruptive; upheaval.

Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.

earth pillar

Earth Resources Technology Satellite

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