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Noun
1. unbiunium (Ubu)
Wikipedia definition
2. UnbiuniumUnbiunium, also known as eka-actinium or element 121, is the temporary name of a hypothetical chemical element in the periodic table that has the temporary symbol Ubu and has the atomic number 121. It would be the first element in the g-block of the periodic table. As of June 2012, no attempt has been made to synthesize unbiunium.
Read “Unbiunium” on English Wikipedia
Read “ウンビウニウム” on Japanese Wikipedia
Read “Unbiunium” on DBpedia

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