Main Entry: tra·pe·zi·um

Pronunciation: \trə-ˈpē-zē-əm, tra-\

Function: noun

Inflected Form(s): plural tra·pe·zi·ums or -zia \-zē-ə\

: a bone in the distal row of the carpus at the base of the thumb—called also greater multangular

[trapezium illustration]