trapezium

noun
tra·​pe·​zi·​um | \trə-ˈpē-zē-əm, tra-\
plural trapeziums or trapezia\trə-​ˈpē-​zē-​ə, 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

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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The first known use of trapezium was in 1570

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trapezium

noun

English Language Learners Definition of trapezium

: a four-sided shape that has no parallel sides

trapezium

noun
tra·​pe·​zi·​um | \trə-ˈpē-zē-əm, tra- \
plural trapeziums or -zia\-​zē-​ə \

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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