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radioactivate

[rey-dee-oh-ak-tuh-veyt] /ˌreɪ di oʊˈæk təˌveɪt/
verb (used with object), radioactivated, radioactivating. Physics.
1.
to make (a substance) radioactive.
Origin
1900-1905
1900-05; radioactive + -ate1
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for radioactivate

radioactivate

/ˌreɪdɪəʊˈæktɪˌveɪt/
verb
1.
(transitive) to make radioactive
Derived Forms
radioactivation, noun
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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