Trapezium

tra-pē′zi-um, n. a plane figure having four unequal sides, no two of which are parallel: one of the wrist-bones—also Trapēze′ :— pl. Trapē′zia , Trapē′ziums .— n. Trapēze′ , a swing of one or more cro -bars used in gymnastic exercises.— adjs. Trapē′zian , having opposed trapeziform faces; Trapē′ziform , having the form of a trapeze.— n. Trap′ezoid (also Trapē′zoid ), a plane four-sided figure like a trapezium, having two of its opposite sides parallel.— adj. Trapezoid′al , having the form of a trapezoid. [Gr. trapezion dim. of trapeza , a table; from tetra , four, pous , podos , a foot.]