1. [N. Amer] A quadrilateral with two parallel sides
   "The roof of the gazebo had a trapezoid shape";
   - trapezium [Brit]
    
2. [Brit] A quadrilateral with no parallel sides
   "The irregular shape of the field formed a trapezoid";
   - trapezium [N. Amer]
    
3. The wrist bone between the trapezium and the capitate bones
   "The trapezoid bone contributes to the stability of the wrist";
   - trapezoid bone, os trapezoideum

Derived forms: trapezoids

Type of: carpal, carpal bone, quadrangle, quadrilateral, tetragon, wrist bone

Encyclopedia: Trapezoid