trapezium (n.)

  1. a quadrilateral with no parallel sides

  2. a multiple star in the constellation of Orion

    [ Syn: trapezium ]

  3. the wrist bone on the thumb side of the hand that articulates with the 1st and 2nd metacarpals

    [ Syn: trapezium bone , os trapezium ]

The dictionary is based on the WordNet Electronic Lexical Database.
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