radar
radar definition
☆ ra·dar (rā′där′)
noun
any of several systems or devices using transmitted and reflected radio waves for detecting a reflecting object, as an aircraft, and determining its direction, distance, height, or speed, or in storm detection, mapping, navigation, etc.
Etymology: ra(dio) d(etecting) a(nd) r(anging)
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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