transactinoid en · ADJ
Etymology
From trans- + actinoid.
Meanings
-
(not-comparable) Synonym of transactinide.
Lastly, and in line with the tradition of honoring a scientist, the name oganesson and symbol Og for element 118 was proposed by the collaborating teams of discoverers at the Joint Institute for Nuclear Research, Dubna (Russia) and Lawrence Livermore National Laboratory (USA) and recognizes Professor Yuri Oganessian (born 1933) for his pioneering contributions to transactinoid elements research.
2016 November 30, “IUPAC Announces the Names of the Elements 113, 115, 117, and 118”, in IUPAC: