Dictionary

transactinide

adjective trans·ac·ti·nide \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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