tra·​pe·​zi·​um | \ trə-ˈpē-zē-əm How to pronounce trapezium (audio) , tra- \
plural trapeziums or trapezia\ trə-​ˈpē-​zē-​ə How to pronounce trapezium (audio) , tra-​ \

Definition of trapezium

1a : a quadrilateral with no parallel sides
b British : trapezoid sense 1a
2 : a bone in the wrist at the base of the metacarpal of the thumb

Examples of trapezium in a Sentence

Recent Examples on the Web Every Friday night in towns and cities across Britain, neon trapeziums lure drunken men to gorge on greasy meat shaved from an elephant’s leg. 1843, "Don’t knock the doner kebab," 10 July 2019

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'trapezium.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of trapezium

1570, in the meaning defined at sense 1a

History and Etymology for trapezium

New Latin, from Greek trapezion, literally, small table, diminutive of trapeza table, from tra- four (akin to tettares four) + peza foot; akin to Greek pod-, pous foot — more at four, foot

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Time Traveler for trapezium

Time Traveler

The first known use of trapezium was in 1570

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Cite this Entry

“Trapezium.” Dictionary, Merriam-Webster, Accessed 22 Apr. 2021.

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English Language Learners Definition of trapezium

US : a four-sided shape that has no parallel sides


tra·​pe·​zi·​um | \ trə-ˈpē-zē-əm, tra- How to pronounce trapezium (audio) \
plural trapeziums or trapezia\ -​zē-​ə How to pronounce trapezium (audio) \

Medical Definition of trapezium

: a bone in the distal row of the carpus at the base of the thumb

called also greater multangular

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