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Definition of Ununbium
1. Noun. A radioactive transuranic element.
Definition of Ununbium
1. Noun. The former systematic element name for the chemical element with atomic number 112 (''symbol'' Uub), which has been officially changed to copernicium ¹
¹ Source: wiktionary.com
Definition of Ununbium
1. a synthetic element [n -S]