trapezoid
trap·e·zoid
noun
The definition of a trapezoid is a shape with four sides, only two of which are parallel.
An example of a trapezoid is the base of a pyramid when the top is flat and there is not a point.
trapezoid
- a plane figure with four sides, only two of which are parallel
- Brit. trapezium (sense )
- Anat. a small bone of the wrist near the base of the index finger
Origin of trapezoid
Modern Latin trapezoides from Classical Greek trapezoeides, shaped like a trapezoid: see trapezium and -oid shaped like a trapezoid
also trap·ezoi′dal
trapezoid
noun
- Mathematics a. A quadrilateral having two parallel sides.b. Chiefly British A trapezium.
- Anatomy A small bone in the wrist, situated near the base of the index finger.
- 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.
Origin of trapezoid
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 -oidRelated Forms:
- trap′e·zoid′ trap′e·zoi′dal
adjective
trapezoid
trapezoid
Noun
(plural trapezoids)
- (geometry) A (convex) quadrilateral with two (non-adjacent) parallel sides.
- (anatomy) The trapezoid bone of the wrist.
Origin
From Ancient Greek Ï„ÏÎ±Ï€ÎÎ¶Î¹Î¿Î½ (trapezion, “irregular quadrilateral", literally “a little table") + -oid (“resembling").