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trap•e•zoid



Pronunciation: (trap'u-zoid"), [key]
—n.
1. Geom.
a. a quadrilateral plane figure having two parallel and two nonparallel sides.
b. Brit.trapezium (def. 1b).
2. Anat.a bone in the wrist that articulates with the metacarpal bone of the forefinger.

—adj.
Also,trap"e•zoi'dal. Geom.of, pertaining to, or having the form of a trapezoid.

Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.

trapezohedrontrapezoidal rule
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