Superactinide Definition
noun
(chemistry) Any of the undiscovered chemical elements from unbiunium (121) to unpenttrium (153), following the transactinides.
Wiktionary
Other Word Forms of Superactinide
Noun
Singular:
superactinide
Plural:
superactinidesOrigin of Superactinide
-
super- + actinide
From Wiktionary
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