trapezium

== English == === Etymology === 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. === Pronunciation === IPA(key): /tɹəˈpiː.zi.əm/ (General American, also) IPA(key): /tɹæˈpi.zi.əm/ === Noun === trapezium (plural trapeziums or trapezia) (geometry, UK, Australia, New Zealand) A quadrilateral with two sides parallel. Hyponym: parallelogram (restrictively) A quadrilateral with two sides parallel and two sides non-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. ==== Usage notes ==== (geometry): The terms trapezium and trapezoid have swapped meanings in the US and Canada as compared with the rest of the world. ==== Synonyms ==== (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. ==== Derived terms ==== ==== Related terms ==== trapeze trapeziform trapezius trapezoid ==== Translations ==== == Dutch == === Etymology === Borrowed from Late Latin trapezium, from Ancient Greek τραπέζιον (trapézion, “irregular quadrilateral”), diminutive of τράπεζα (trápeza, “table”). === Pronunciation === IPA(key): /trɑˈpeːzɪʏm/ === Noun === trapezium n (plural trapeziums or trapezia, diminutive trapeziumpje n) (geometry) a trapezium, trapezoid, a quadrilateral with two sides parallel ==== Related terms ==== trapezoïde == Latin == === Etymology === Late Latin; from Ancient Greek τραπέζιον (trapézion, “irregular quadrilateral”, literally “a little table”), diminutive of τράπεζα (trápeza, “table”). === Pronunciation === (Classical Latin) IPA(key): [traˈpɛz.zi.ũː] (modern Italianate Ecclesiastical) IPA(key): [traˈpɛd.d͡zi.um] === Noun === trapezium n (genitive trapeziī or trapezī); second declension trapezium, trapezoid (four-sided shape with no sides parallel and no equal sides) ==== Declension ==== Second-declension noun (neuter). 1Found in older Latin (until the Augustan Age). ==== Descendants ====