transactinide
trans·ac·ti·nide
adj \tran(t)-ˈsak-tə-ˌnīd, tran-ˈzak-\Definition of TRANSACTINIDE
: of, relating to, or being actual or hypothetical elements with atomic weights higher than those of the actinide series <transactinide chemistry>
First Known Use of TRANSACTINIDE
1969
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