Definitions for: Trapezoid


[n] the wrist bone between the trapezium and the capitate bones
[n] (in US) a quadrilateral with two parallel sides



Webster (1913) Definition: Trap"e*zoid, n. [Gr. ? trapezoid-shaped; ? table + ?
shape, likeness: cf. F. trap['e]zo["i]de. See Trapezium.]
1. (Geom.) A plane four-sided figure, having two sides
parallel to each other.

2. (Anat.) A bone of the carpus at the base of the second
metacarpal, or index finger.


Trap"e*zoid, a.
1. Having the form of a trapezoid; trapezoidal; as, the
trapezoid ligament which connects the coracoid process and
the clavicle.

2. (Anat.) Of or pertaining to the trapezoid ligament; as,
the trapezoid line.

Synonyms: os trapezoideum, trapezoid bone

See Also: carpal, carpal bone, quadrangle, quadrilateral, tetragon, wrist bone

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