superactinide en · NOUN
Pronunciation
- (US) audio
Etymology
Etymology tree Proto-Indo-European *úp Proto-Indo-European *-er Proto-Indo-European *upér Proto-Italic *super Latin super Latin super-lbor. English super- English actinide English superactinide From super- + actinide.
Meanings
- 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.
Forms
| Spelling | Features | Labels | Source |
|---|---|---|---|
| superactinides | Number=Plur | lexicographic |