frustum

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frustum

noun frustums · frusta

  1. A cone or pyramid whose tip has been truncated by a plane parallel to its base. In a parabolic conoid this difference vaniſhes, the fruſtum being always equal to a cylinder of the ſame height upon the ſection of the conoid that biſects the altitude of the fruſtum and is parallel to its baſes.
  2. A portion of a sphere, or in general any solid, delimited by two parallel planes. In some women it^([the os uteri]) is flat, in many more tuberose, and forming, as it were, a frustum of a sphere;[…].

Translations

Every language

noun truncated cone or pyramid

Españoltronco, tronco de geometría, tronco geométrico
한국어절두체 jeolduche
中文平截頭體 /平截头体 píngjié tóutǐ
हिन्दीछिन्नक chinnak
Françaistronc
DeutschKegelstumpf, Stumpf, Pyramidenstumpf
Italianotronco
Ελληνικάκόλουρος κώνος kólouros kónos, κόλουρη πυραμίδα kólouri pyramída
Русскийусечённая пирами́да f pyramid usečónnaja piramída, усечённый ко́нус m cone usečónnyj kónus

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MLA

"frustum." Wiktionary, via Micwyn, micwyn.com/word/frustum. Accessed 6 Nov. 2026.

APA

frustum. (n.d.). In Wiktionary, via Micwyn. Retrieved November 6, 2026, from https://micwyn.com/word/frustum

Chicago

"frustum." Wiktionary, via Micwyn. Accessed November 6, 2026. https://micwyn.com/word/frustum.

BibTeX
@misc{frustum_2026,
  title = {frustum},
  howpublished = {Wiktionary, via Micwyn},
  year = {2026},
  url = {https://micwyn.com/word/frustum},
  urldate = {2026-11-06}
}