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escape velocity definition

escape velocity

the minimum speed required for a particle, space vehicle, or other body to escape permanently from the gravitational field of a planet, star, etc.: it is c. 11.3 km (c. 7 mi) per second for escape from the earth

Webster's New World College Dictionary Copyright © 2009 by Wiley Publishing, Inc., Cleveland, Ohio.
Used by arrangement with John Wiley & Sons, Inc.

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