circumradius.
For a given geometric shape, the radius of the smallest circle or sphere into which it will fit.
Meaning & usage
For a given geometric shape, the radius of the smallest circle or sphere into which it will fit.
The circumradius of the unit square is one-half the square root of two.
Where this word comes from
Etymology tree Ancient Greek κίρκος (kírkos)bor. Latin circus Latin circum Latin circum-bor. English circum- English radius English circumradius From circum- + radius.
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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.