Found 2 items, similar to Trapezium.
English → English (WordNet) Definition: trapezium trapezium n 1: a quadrilateral with no parallel sides [ant: parallelogram] 2: a multiple star in the constellation of Orion [syn: the Trapezium ] 3: the wrist bone on the thumb side of the hand that articulates with the 1st and 2nd metacarpals [syn: trapezium bone , os trapezium] [also: trapezia (pl)]
English → English (gcide) Definition: Trapezium Trapezium \Tra*pe"zi*um\, n.; pl. E. Trapeziums, L. Trapezia. [NL., fr. Gr. ? a little table, an irregular four-sided figure, dim. of ? a table, for ?; ? (see Tetra-) + ? foot, akin to ? foot; hence, originally, a table with four feet. See Foot.] 1. (Geom.) A plane figure bounded by four right lines, of which no two are parallel. [1913 Webster] 2. (Anat.) (a) A bone of the carpus at the base of the first metacarpal, or thumb. (b) A region on the ventral side of the brain, either just back of the pons Varolii, or, as in man, covered by the posterior extension of its transverse fibers. [1913 Webster]