Hypertext Webster Gateway: "trapezium"
From Webster's Revised Unabridged Dictionary (1913) (web1913)
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.
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.
From WordNet (r) 1.7 (wn)
trapezium
n 1: (in US) a quadrilateral with no parallel sides [ant: {parallelogram}]
2: a multiple star in the constellation of Orion [syn: {Trapezium},
{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}]
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