thoron Hear it!

thoron definition

tho·ron (t̸hôr′än′)

noun

a radioactive isotope of radon, resulting from the disintegration of thorium

Etymology: ModL < thor(ium) + -on as in argon

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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