mendelevium

noun

men·​de·​le·​vi·​um ˌmen-də-ˈlē-vē-əm 

-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

Kids Definition

mendelevium

noun

men·​de·​le·​vi·​um ˌmen-də-ˈlē-vē-əm 

: a radioactive element that is produced artificially see element

Medical Definition

mendelevium

noun

men·​de·​le·​vi·​um ˌmen-də-ˈlē-vē-əm  -ˈlā- 

: a radioactive element that is artificially produced

—symbol Md see Chemical Elements Table