a quadrilateral plane figure having two parallel and two nonparallel sides.
British. trapezium (def. 1b).
Anatomy. a bone in the wrist that articulates with the metacarpal bone of the forefinger.
Also trap·e·zoi·dal. Geometry. of, relating to, or having the form of a trapezoid.
- post·trap·e·zoid, adjective
- sub·trap·e·zoid, adjective
- sub·trap·e·zoi·dal, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
How to use trapezoid in a sentence
In channels of trapezoidal form the velocity increases and diminishes with the discharge.
The superstructure is of wrought iron, mainly trapezoidal trusses, varying in length from 45 feet to 150 feet.
It has a roughly oval beehive shape with a trapezoidal framed opening in which a pottery door fits snugly.North Devon Pottery and Its Export to America in the 17th Century | C. Malcolm Watkins
Side and top sections are joined with seams, reinforced by finger impressions, meeting at top of trapezoidal opening.North Devon Pottery and Its Export to America in the 17th Century | C. Malcolm Watkins
Median occipital trapezoidal, margins underlapped conspicuously by the external occipitals.A Guide to the Study of Fishes, Volume 1 (of 2) | David Starr Jordan
British Dictionary definitions for trapezoid
a quadrilateral having neither pair of sides parallel
Also called: (Brit, Austral., NZ, and South African) trapezium US and Canadian a quadrilateral having two parallel sides of unequal length
a small bone of the wrist near the base of the index finger
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Scientific definitions for trapezoid
A four-sided plane figure having two parallel sides.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Cultural definitions for trapezoid
A four-sided polygon in which two sides are parallel and two are not.
The New Dictionary of Cultural Literacy, Third Edition Copyright © 2005 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.