Daily Almanac for
Feb 15, 2012
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Dictionary


ra•di•o•ac•tive



Pronunciation: (rā"dē-ō-ak'tiv), [key]
—adj. Physics, Chem.
of, pertaining to, exhibiting, or caused by radioactivity.

Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.

radioactivateradioactive decay
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