trapezium
noun
1 trapezium
A quadrilateral with no parallel sides.
Dutch: trapezoïde
Polish: trapez
2 Trapezium
A multiple star in the constellation of Orion.
3 trapezium
The wrist bone on the thumb side of the hand that articulates with the 1st and 2nd metacarpals.
synonyms: os trapezium, trapezium bone.
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