americium

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noun am·er·i·ci·um \ˌa-mə-ˈri-shē-əm, -sē-\

Definition of americium

  1. :  a radioactive metallic element produced artificially by bombarding plutonium with high-energy neutrons — see element table

Recent Examples of americium from the Web

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'americium.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

Origin and Etymology of americium

New Latin, from America + New Latin -ium


Medical Dictionary

americium

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noun am·er·i·ci·um \ˌam-ə-ˈris(h)-ē-əm\

Medical Definition of americium

  1. :  a radioactive metallic element produced by bombardment of plutonium with high-energy neutrons—symbol Am; see element table


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