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Related to trapezoid: Trapezoid rule
a. A quadrilateral having two parallel sides.
b. Chiefly British A trapezium.
2. Anatomy A small bone in the wrist, situated near the base of the index finger.
3. Sports An area in the shape of a trapezoid marked behind the goal line and the goal in ice hockey, where the goalie is allowed to play the puck.
[Originally, a quadrilateral with no parallel sides (later confused with trapezium, originally, a quadrilateral with two parallel sides), from New Latin trapezoīdēs, a quadrilateral with no parallel sides, from Late Greek trapezoeidēs, from Greek table-shaped : trapeza, table; see trapezium + -oeidēs, -oid.]
trap′e·zoid′, trap′e·zoi′dal (-zoid′l) adj.
1. (Mathematics) a quadrilateral having neither pair of sides parallel
2. (Mathematics) Also called: trapezium (Brit, Austral., NZ, and South African)US and Canadian a quadrilateral having two parallel sides of unequal length
3. (Anatomy) a small bone of the wrist near the base of the index finger
[C18: from New Latin trapezoidēs, from Late Greek trapezoeidēs trapezium-shaped, from trapeza table]
a. a quadrilateral plane figure having two parallel and two nonparallel sides.
b. Brit. trapezium (def. 1b).
2. the mammalian wrist bone that articulates with the metacarpal of the second digit or forefinger.adj.
3. Also, trap`e•zoi′dal. of, pertaining to, or having the form of a trapezoid.
A four-sided figure having two parallel sides.
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|Noun||1.||trapezoid - a quadrilateral with two parallel sides|
U.S.A., United States, United States of America, US, USA, America, the States, U.S. - North American republic containing 50 states - 48 conterminous states in North America plus Alaska in northwest North America and the Hawaiian Islands in the Pacific Ocean; achieved independence in 1776
|2.||trapezoid - the wrist bone between the trapezium and the capitate bones|