trapezoid

trapezoid definition - medical

trap·e·zoid (trăpˈĭ-zoidˌ)

noun
  1. A quadrilateral having two parallel sides.
  2. A small bone in the wrist that is situated near the base of the index finger and that articulates with the second metacarpal, trapezium, capitate, and scaphoid bones.

Related Forms:

  • trapˈe·zoidˌ, trapˌe·zoiˈdal (-zoidˈl) adjective

The American Heritage® Medical Dictionary Copyright © 2009 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

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