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2 ENTRIES FOUND:

actinide

noun ac·ti·nide \ˈak-tə-ˌnīd\

Definition of ACTINIDE

:  any of the series of elements with increasing atomic numbers that begins with actinium or thorium and ends with lawrencium — see periodic table table

Origin of ACTINIDE

International Scientific Vocabulary
First Known Use: 1945

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April 27, 2015
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