ALL meanings of trapezial
tra·pe·zi·um
T t - noun plural trapezial Geometry. (in Euclidean geometry) any rectilinear quadrilateral plane figure not a parallelogram. a quadrilateral plane figure of which no two sides are parallel. British. trapezoid (def 1a). 1
- noun plural trapezial Anatomy. a bone in the wrist that articulates with the metacarpal bone of the thumb. 1