superactinide.
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.
Meaning & usage
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.
Where this word comes from
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.
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Definitions, grammatical labels, IPA, etymology and examples: Wiktionary contributors, extracted by Kaikki / Wiktextract. Adapted under CC BY-SA 4.0. Selected fields and authored examples are shown; third-party quotations and audio are omitted. See contributor history.
Last enriched 2026-09-10. Definitions are in English. Romanizations are shown when supplied by the source; syllable estimates are omitted for unsupported scripts.