trapezoid

English

Trapezoid (1) (US).

Trapezoid (2) (UK).

Etymology

From Ancient Greek τραπέζιον (trapézion, “irregular quadrilateral”, literally “a little table”) + -oid (“resembling”).

Pronunciation

• enPR: tră'pəzoid, IPA^(key): /ˈtɹæpəzɔɪd/

• Audio (General Australian):

  (file)

Noun

trapezoid (plural trapezoids)

1. (geometry, US, Canada) A (convex) quadrilateral with two (non-adjacent) parallel sides.
   • 2023, Brandon Taylor, The Late Americans, Jonathan Cape, page 178:

     There was a trapezoid of light on his shoulder, some bright fragment torn from a greater plane.

2. (geometry, British, Australia, New Zealand) A convex quadrilateral with no sides parallel.
3. (anatomy) The trapezoid bone of the wrist.
4. (ice hockey) The marked trapezoidal area immediately behind the goal line and the goal itself within which the goaltender may touch the puck.

Synonyms

• (geometry, convex quadrilateral with two non-adjacent parallel sides): (British) trapezium
• (geometry, convex quadrilateral with no parallel sides): irregular quadrilateral, (US) trapezium

Derived terms

• Ames trapezoid
• isosceles trapezoid
• right trapezoid
• trapezoidal
• trapezoid rule

Translations

quadrilateral with two sides parallel — see trapezium

quadrilateral with no sides parallel — see trapezium

trapezoid bone

• Catalan: trapezoide (ca) m
• Finnish: iso monikulmaluu (fi)
• French: trapézoïde (fr) m
• Portuguese: trapezoide m
• Spanish: trapezoide (es) m

Indonesian

Etymology

Borrowed from English trapezoid.

Pronunciation

• (Standard Indonesian) IPA^(key): /trapeˈzoid/ [t̪ra.peˈzo.ɪt̪̚]
• Syllabification: tra‧pe‧zoid

Noun

trapezoid (plural trapezoid-trapezoid)

1. trapezoid (a convex quadrilateral with no sides parallel)

Related terms

• trapesium

References

• “trapezoid” in Kamus Besar Bahasa Indonesia, Jakarta: Agency for Language Development and Cultivation – Ministry of Education, Culture, Research, and Technology of the Republic of Indonesia, 2016.

Polish

trapezoid

Etymology

(This etymology is missing or incomplete. Please add to it, or discuss it at the Etymology scriptorium.)

Pronunciation

• IPA^(key): /tra.pɛˈzɔ.it/
• Rhymes: -ɔit
• Syllabification: tra‧pe‧zo‧id

Noun

trapezoid m inan (related adjective trapezoidalny)

1. (geometry) trapezium, trapezoid (quadrilateral with two sides parallel and two sides non-parallel)

Declension

Declension of trapezoid

	singular	plural
nominative	trapezoid	trapezoidy
genitive	trapezoidu	trapezoidów
dative	trapezoidowi	trapezoidom
accusative	trapezoid	trapezoidy
instrumental	trapezoidem	trapezoidami
locative	trapezoidzie	trapezoidach
vocative	trapezoidzie	trapezoidy

Further reading

• trapezoid in Polish dictionaries at PWN

Romanian

Etymology

Borrowed from French trapézoïde. By surface analysis, trapez +‎ -oid.

Noun

trapezoid n (plural trapezoide)

1. trapezoid

Declension

Declension of trapezoid

	singular			plural
	indefinite	definite		indefinite	definite
nominative-accusative	trapezoid	trapezoidul		trapezoide	trapezoidele
genitive-dative	trapezoid	trapezoidului		trapezoide	trapezoidelor
vocative	trapezoidule			trapezoidelor

Serbo-Croatian

Etymology

From New Latin trapezoides.

Pronunciation

• IPA^(key): /trapezǒiːd/
• Hyphenation: tra‧pe‧zo‧id

Noun

trapezòīd m (Cyrillic spelling трапезо̀ӣд)

1. trapezium

References

• “trapezoid”, in Hrvatski jezični portal [Croatian language portal] (in Serbo-Croatian), 2006–2025