trapezoid Meaning, Definition & Usage

  1. noun a quadrilateral with two parallel sides
  2. noun the wrist bone between the trapezium and the capitate bones
    trapezoid bone; os trapezoideum.

WordNet

Trap"e*zoid noun
Etymology
Gr. trapezoid-shaped; table + shape, likeness: cf. F. trapézoïde. See Trapezium.
Definitions
  1. (Geom.) A plane four-sided figure, having two sides parallel to each other.
  2. (Anat.) A bone of the carpus at the base of the second metacarpal, or index finger.
Trap"e*zoid adjective
Definitions
  1. Having the form of a trapezoid; trapezoidal; as, the trapezoid ligament which connects the coracoid process and the clavicle.
  2. (Anat.) Of or pertaining to the trapezoid ligament; as, the trapezoid line.

Webster 1913