Dictionary

americium

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

Definition of AMERICIUM

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

Origin of AMERICIUM

New Latin, from America + New Latin -ium
First Known Use: 1946

americium

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

Medical Definition of AMERICIUM

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

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