Inflected forms: pl. tra·pe·zi·ums or tra·pe·zi·a (-z-) 1. A quadrilateral having no parallel sides. 2.Chiefly British A trapezoid. 3. A bone in the wrist at the base of the thumb.
ETYMOLOGY:
Late Latin trapezium, trapezoid, from Greek trapezion, diminutive of trapeza, table : tra-, four; see kwetwer- in Appendix I + peza, foot; see ped- in Appendix I.
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