Recorded since 1570, learned borrowing from Late Latin trapezium, from Ancient Greek τραπέζιον (trapézion, “irregular quadrilateral”, literally “a little table”), diminutive of τράπεζα (trápeza, “table”). Doublet of trapeze.
Audio (AU) (file)
- (geometry, Britain, Australia, New Zealand) A four-sided polygon with two sides parallel
- (geometry, US, dated) A four-sided polygon with no parallel sides and no sides equal; a simple convex irregular quadrilateral.
- (anatomy) 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.
- (geometry): The terms trapezium and trapezoid have swapped meanings in the US and Canada as compared with the rest of the world.
- (archaic) trapeze
- (geometry, British, four-sided polygon with two parallel sides): (US) trapezoid
- (geometry, US, four-sided polygon with no sides parallel and no equal sides): (British) trapezoid, (British) irregular quadrilateral.
- (Classical) IPA(key): /traˈpez.zi.um/, [t̪ɾaˈpɛz.zi.ʊ̃ˑ]
- (Ecclesiastical) IPA(key): /traˈped.d͡zi.um/, [t̪raˈpɛd.d͡zi.um]
Second-declension noun (neuter).
1Found in older Latin (until the Augustan Age).