oganesson

noun

oga·​nes·​son ˌō-gə-ˈne-ˌsän How to pronounce oganesson (audio)
ˌä-
: a short-lived, artificially produced radioactive element that has 118 protons
symbol Og
see Chemical Elements Table

Word History

Etymology

Yuri Tsolakovich Oganessian born 1933 Russian-Armenian physicist (Russian Jurij Colakovič Oganesjan, Armenian Yuri Cʼolaki Hovhannisyan) + -on, suffix of elements that are noble gases, as argon and xenon

First Known Use

2016, in the meaning defined above

Time Traveler
The first known use of oganesson was in 2016

Dictionary Entries Near oganesson

Cite this Entry

“Oganesson.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/oganesson. Accessed 26 Nov. 2022.

Kids Definition

oganesson

noun

oga·​nes·​son ˌō-gə-ˈne-ˌsän How to pronounce oganesson (audio)
ˌä-
: a short-lived artificially produced radioactive element see Chemical Elements Table
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