noun tra·pe·zi·um \trə-ˈpē-zē-əm, tra-\

: a four-sided shape that has no parallel sides

plural tra·pe·zi·ums or -zia \-zē-ə\

Full Definition of TRAPEZIUM

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


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
First Known Use: 1570

Rhymes with TRAPEZIUM


noun tra·pe·zi·um \trə-ˈpē-zē-əm, tra-\   (Medical Dictionary)
plural tra·pe·zi·ums 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

Illustration of TRAPEZIUM


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