gamma ray Hear it!

gamma ray definition

gamma ray

  1. electromagnetic radiation having a wavelength of 10 centimeters or less: may be produced by the reactions of nuclei or elementary particles or by the interaction of high energy electrons with matter
  2. a stream of gamma rays

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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