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mendelevium

noun

men·​de·​le·​vi·​um ˌmen-də-ˈlē-vē-əm How to pronounce mendelevium (audio)
-ˈlā-
: a radioactive metallic element produced artificially see Chemical Elements Table

Word History

Etymology

New Latin, from Dmitry Mendeleyev

First Known Use

1955, in the meaning defined above

Time Traveler
The first known use of mendelevium was in 1955

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