1 oganesson | Definition of oganesson
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oganesson

noun
oga·​nes·​son | \ ˌō-gə-ˈne-ˌsän How to pronounce oganesson (audio) , ˌä-\

Definition of oganesson

: a short-lived, artificially produced radioactive element that has 118 protons —symbol Og — see Chemical Elements Table

First Known Use of oganesson

2016, in the meaning defined above

History and Etymology for oganesson

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

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