radio- Hear it!

radio- definition

radio- (rā′dē ō, -ə)

  1. ray, raylike
  2. by radio radiotelegraph
  3. by means of radiant energy radiothermy
  4. radioactive radiotherapy

Etymology: Fr < L radius, ray: see radius

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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