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Webster 1913 Edition

Trapezium

Tra-pe′zi-um

,
Noun.
;
pl. E.
Trapeziums
(#)
, L.
Trapezia
(#)
.
[NL., fr. Gr. [GREEK] a little table, an irregular four-sided figure, dim. of [GREEK] a table, for [GREEK]; [GREEK] (see
Tetra-
) + [GREEK] foot, akin to [GREEK] foot; hence, originally, a table with four feet. See
Foot
.]
1.
(Geom.)
A plane figure bounded by four right lines, of which no two are parallel.
2.
(Anat.)
(a)
A bone of the carpus at the base of the first metacarpal, or thumb.
(b)
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.

Webster 1828 Edition

Trapezium

TRAPE'ZIUM

,
Noun.
plu.
trapezia or trapeziums. [L. from Gr. a little table.]
1.
In geometry, a plane figure contained under four unequal right lines, none of them parallel.
2.
In anatomy, a bone of the carpus.

Definition 2024

trapezium

trapezium

English

Noun

trapezium ‎(plural trapeziums or trapezia)

  1. (geometry, Britain, Australia, New Zealand) A four-sided polygon with two sides parallel
  2. (geometry, US) A four-sided polygon with no parallel sides and no sides equal; a simple convex irregular quadrilateral.
  3. (anatomy) The trapezium bone of the wrist.
  4. 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

  • (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.

Translations

Related terms

Dutch

Pronunciation

  • IPA(key): /trɑˈpezɪʏm/

Noun

trapezium n ‎(plural trapeziums or trapezia, diminutive trapeziumpje n)

  1. (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) IPA(key): /traˈpe.zi.um/, [traˈpɛ.zi.ũ]

Noun

trapezium n ‎(genitive trapeziī); second declension

  1. trapezium, trapezoid (four-sided shape with no sides parallel and no equal sides)

Inflection

Second declension.

Case Singular Plural
nominative trapezium trapezia
genitive trapeziī trapeziōrum
dative trapeziō trapeziīs
accusative trapezium trapezia
ablative trapeziō trapeziīs
vocative trapezium trapezia

Descendants

Etymology

Recorded since 1570, from learned borrowing from Late Latin trapezium, from Ancient Greek τραπέζιον ‎(trapézion, “irregular quadrilateral”, literally “a little table”), diminutive of τράπεζα ‎(trápeza, “table”).

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