• synonyms


noun, plural troch·le·ae [trok-lee-ee] /ˈtrɒk liˌi/, troch·le·as. Anatomy.
  1. a pulleylike structure or arrangement of parts.
Show More

Origin of trochlea

1685–95; < Latin: pulley block or sheave < Greek trochiléa, trochil(e)ía; akin to tróchilos sheave, runner, akin to tréchein to run
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for trochlea

Historical Examples

  • In the human skeleton, the internal lip of the trochlea descends lower than the external; and also lower than the condyle.

    Artistic Anatomy of Animals

    douard Cuyer

  • In the ox and the sheep, the condyle is lower than the trochlea, but only very little lower.

  • In man, the external lip of the trochlea reaches higher than the internal, and it is more prominent in front.

  • There is another modification in regard to the prominence and extent of the two lips of the trochlea.

  • We have just said that the trochlea is continuous without interruption with the condyles; this is accurate.

British Dictionary definitions for trochlea


noun plural -leae (-lɪˌiː)
  1. any bony or cartilaginous part with a grooved surface over which a bone, tendon, etc, may slide or articulate
Show More

Word Origin

C17: from Latin, from Greek trokhileia a sheaf of pulleys; related to trokhos wheel, trekhein to run
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

trochlea in Medicine


n. pl. troch•le•ae (-lē-ē′)
  1. An anatomical structure that resembles a pulley, especially the part of the distal end of the humerus that articulates with the ulna.
  2. A fibrous loop in the eye socket near the nasal process of the frontal bone, through which the tendon of the superior oblique muscle of the eye passes.
Show More
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.