'Trapezium' definitions:
Definition of 'trapezium'
(from WordNet)
noun
A quadrilateral with no parallel sides [ant: parallelogram]
noun
A multiple star in the constellation of Orion
noun
The wrist bone on the thumb side of the hand that articulates with the 1st and 2nd metacarpals [syn: trapezium, trapezium bone, os trapezium]
Definition of 'Trapezium'
From: GCIDE
- 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]