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Also available:
World English Dictionary
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radial velocity
ra·di·al ve·loc·i·ty
noun
Definition:
celestial body's velocity:
the velocity of a star or other astronomical object measured along the observer's line of sight
Encarta® World English Dictionary [North American Edition] © & (P)2009 Microsoft Corporation. All rights reserved. Developed for Microsoft by Bloomsbury Publishing Plc.
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