trapezoid

• POS: Noun
• HYPHEN: trap=e=zoid

CIDE DICTIONARY

trapezoid, n. [Gr. trapezoid-shaped; table + shape, likeness: cf. F. trapézoïde. See Trapezium.].

•  A plane four-sided figure, having two sides parallel to each other.  [1913 Webster]
•  A bone of the carpus at the base of the second metacarpal, or index finger.  [1913 Webster]

trapezoid, a. 

•  Having the form of a trapezoid; trapezoidal; as, the trapezoid ligament which connects the coracoid process and the clavicle.  [1913 Webster]
•  Of or pertaining to the trapezoid ligament; as, the trapezoid line.  [1913 Webster]

OXFORD DICTIONARY

trapezoid, n.
1 Brit. a quadrilateral with no two sides parallel.
2 US = TRAPEZIUM 1.

Derivative

trapezoidal adj.

Etymology

mod.L trapezoides f. Gk trapezoeides (as TRAPEZIUM)

THESAURUS

trapezoid

cube-shaped, cubed, cubic, cubiform, cuboid, diced, foursquare, oblong, orthogonal, quadrangular, quadrate, quadriform, quadrilateral, rectangular, rhombic, rhomboid, square, tetragonal, tetrahedral, trapezohedral