actinouranium Hear it!

actinouranium definition

actino·ura·nium (ak′tə nō′yo̵̅o̅ rā′nē əm)

noun

the uranium isotope of mass number 235: begins the actinium series

Etymology: < actinium + uranium

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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