trapezium.
A quadrilateral with two sides parallel.
Meaning & usage
A quadrilateral with two sides parallel.
A quadrilateral with two sides parallel. A quadrilateral with two sides parallel and two sides non-parallel.
A four-sided polygon with no parallel sides and no sides equal; a simple convex irregular quadrilateral.
The trapezium bone of the wrist.
A region on the ventral side of the brain, either just back of the pons Varolii, or, as in man, covered by the posterior extension of its transverse fibers.
Where this word comes from
Learned borrowing from Late Latin trapezium, borrowed from Ancient Greek τρᾰπέζῐον (trăpézĭon, “irregular quadrilateral”, literally “small table”), from τράπεζα (trápeza, “table”) + -ιον (-ion, diminutive suffix). First attested in 1570. Doublet of trapeze.
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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.