Tra-pē′zi-ūm, n.

(Synop., §130), n.; Eng. pl. TRA-PĒ′ZI-ĒMS; Lat. pl. TRA-PĒ′ZI A. [N. Lat., fr. Gr. τραπέζιον, a little table, an irregular four-sided figure, diminutive of τραπέζα, a table; It. trapezio, Sp. trapecio, Fr. trapéze.]

1. (Geom.) A plane figure contained under four right lines, of which no two are parallel.
2. (Anat.) The first bone of the second row of the wrist, that supports the thumb;—so called from its figure.