Trapeziums
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]


The Collaborative International Dictionary of English. 2000.

Look at other dictionaries:

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  • Trapezia — 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… …   The Collaborative International Dictionary of English

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  • trapezohedron — trapezohedral, adj. /treuh pee zeuh hee dreuhn, trap euh /, n., pl. trapezohedrons, trapezohedra / dreuh/. 1. Crystall. a crystal form having all faces trapeziums. 2. Geom. a trapezoid trisoctahedron. [1810 20; TRAPEZ(OID) + O + HEDRON] * * * …   Universalium

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