English Explanatory Dictionary

superactinide

English dictionary entry

Meanings

noun
  1. Any of the undiscovered chemical elements from unbiunium (121) to perhaps unpentseptium (157), following the transactinides. These will presumably go below the actinides in the periodic table.

Pronunciation

LL-Q1860 (eng)-Flame, not lame-superactinide.wav

Word forms

superactinide superactinides

Etymology

From super- + actinide.

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