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

Examples of moscovium in a Sentence

Recent Examples on the Web The International Union of Pure and Applied Chemistry (the organization charged with naming the elements) has suggested these should be called nihonium (Nh); moscovium (Mc); tennessine (Ts) and oganesson (Og) and is expected to confirm the proposal in November. Mark Lorch, Discover Magazine, 9 June 2016

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'moscovium.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History


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

Dictionary Entries Near moscovium

Cite this Entry

“Moscovium.” Dictionary, Merriam-Webster, Accessed 8 Dec. 2023.

Kids Definition


: a short-lived artificially produced radioactive element see Chemical Elements Table
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