oganesson (English, noun)
expansion: oganesson (uncountable)
Senses:
wikidata: Q1307
glosses: The chemical element (symbol Og) with atomic number 118. It is the heaviest known element. Highly radioactive, it does not occur naturally. Originally expected to be a noble gas, it is now predicted to be a reactive metallic solid, and a semiconductor or a post-transition metal.
tags: uncountable
Forms: