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radar: Meaning and Definition of

ra•dar

Pronunciation: (r?'dr), [key]
? n. Electronics.
  1. a device for determining the presence and location of an object by measuring the time for the echo of a radio wave to return from it and the direction from which it returns.
Random House Unabridged Dictionary, Copyright 1997, by Random House, Inc., on Infoplease.
See also:
rad radar astronomy
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