meitnerium/maɪtˈnɪəɹi.əm/EtymologyFrom Meitner + -ium; named for Lise Meitner.meitnerium means A transuranic chemical element (symbol Mt) with atomic number 109. Lexicurio rates it Sui generis — a strength score of 87 out of 100.nounA transuranic chemical element (symbol Mt) with atomic number 109.