noun. the wrist bone on the thumb side of the hand that articulates with the 1st and 2nd metacarpals.
- trapezium bone
- os trapezium
- carpal bone
noun. a quadrilateral with no parallel sides.
noun. a multiple star in the constellation of Orion.
Sentences with trapezium
1. Noun, singular or mass
If the shape you're looking at doesn't have at least one set of parallel sides, it's not a trapezoid; it's something called a trapezium instead.