Dictionary
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| ra·di·o·ac·tiv·i·ty [ ràydee ō ak tívvətee ] |
noun |
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| Definition: |
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1. radioactive nature: the radioactive nature of a substance such as uranium or plutonium
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2. radiation: the high-energy particles emitted by radioactive substances
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| Encarta® World English Dictionary [North American Edition] © & (P)2007 Microsoft Corporation. All rights reserved. Developed for Microsoft by Bloomsbury Publishing Plc. |
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