einsteinium

noun
ein·​stei·​ni·​um | \īn-ˈstī-nē-əm \

Definition of einsteinium 

: a radioactive element produced artificially — see Chemical Elements Table

First Known Use of einsteinium

1955, in the meaning defined above

History and Etymology for einsteinium

New Latin, from Albert Einstein

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The first known use of einsteinium was in 1955

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einsteinium

noun
ein·​stei·​ni·​um | \īn-ˈstī-nē-əm \

Medical Definition of einsteinium 

: a radioactive element produced artificially symbol Es — see Chemical Elements Table

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Britannica.com: Encyclopedia article about einsteinium

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