moscovium

noun

mos·​co·​vi·​um mä-ˈskō-vē-əm How to pronounce moscovium (audio)
: a short-lived, artificially produced radioactive element that has 115 protons
—symbol Mc see Chemical Elements Table

Word History

Etymology

New Latin Moscovia "Moscow" (or from the base of Russian moskovskij "of Moscow, Muscovite") + -ium; so named because the Joint Institute for Nuclear Research in Dubna, Russia, where the element was produced, lies within Moscow Oblast

First Known Use

2016, in the meaning defined above

Time Traveler
The first known use of moscovium was in 2016

Rhymes for moscovium

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Browse Nearby Words

moscovite
moscovium
Moscow
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Cite this Entry

“Moscovium.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/moscovium. Accessed 7 Jul. 2026.

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Kids Definition

moscovium

noun
mä-ˈskō-vē-əm How to pronounce moscovium (audio)
: a short-lived artificially produced radioactive element see element
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