thermonuclear Hear it!

thermonuclear definition

thermo·nu·clear (t̸hʉr′mō no̵̅o̅′klē ər, -nyo̵̅o̅′-)

adjective

  1. designating or of a reaction in which isotopes of a light element, esp. hydrogen, fuse at temperatures of millions of degrees into heavier nuclei
  2. designating, of, or employing the heat energy released in nuclear fusion thermonuclear reactor

Etymology: thermo- + nuclear

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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