frustum.
A cone or pyramid whose tip has been truncated by a plane parallel to its base.
Meaning & usage
A cone or pyramid whose tip has been truncated by a plane parallel to its base.
A portion of a sphere, or in general any solid, delimited by two parallel planes.
Where this word comes from
Etymology tree Proto-Indo-European *bʰrews- Proto-Indo-European *-tós Proto-Indo-European *bʰrustós Proto-Italic *frustom Latin frustumbor. English frustum Borrowed from Latin frustum (“morsel”).
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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.