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 amp; -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 trapezo&imacron;d&emacron;s, a quadrilateral with no parallel sides, from Late Greek trapezoeid&emacron;s, from Greek table-shaped : trapeza, table; see trapezium + -oeid&emacron;s, -oid.Related 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").