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

Browse Nearby Words

Mendeléeff's law
mendelevium
Mendeleyev
See all Nearby Words

Cite this Entry

“Mendelevium.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/mendelevium. Accessed 24 Apr. 2025.

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Kids Definition

mendelevium

noun
men·​de·​le·​vi·​um ˌmen-də-ˈlē-vē-əm How to pronounce mendelevium (audio)
: a radioactive element that is produced artificially see element

Medical Definition

mendelevium

noun
men·​de·​le·​vi·​um ˌmen-də-ˈlē-vē-əm How to pronounce mendelevium (audio) -ˈlā- How to pronounce mendelevium (audio)
: 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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