mendelevium

noun
men·​de·​le·​vi·​um | \ˌmen-də-ˈlē-vē-əm, -ˈlā-\

Definition of mendelevium 

: a radioactive metallic element produced artificially — see Chemical Elements Table

First Known Use of mendelevium

1955, in the meaning defined above

History and Etymology for mendelevium

New Latin, from Dmitry Mendeleyev

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The first known use of mendelevium was in 1955

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mendelevium

noun
men·​de·​le·​vi·​um | \ˌmen-də-ˈlē-vē-əm, -ˈlā- \

Medical Definition of mendelevium 

: a radioactive element that is artificially produced symbol Md — see Chemical Elements Table

More from Merriam-Webster on mendelevium

Britannica.com: Encyclopedia article about mendelevium

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