noun, plural troch·le·ae [trok-lee-ee] /ˈtrɒk liˌi/, troch·le·as. Anatomy.

a pulleylike structure or arrangement of parts.

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 Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for trochlea

Historical Examples of trochlea

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

  • 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)

any bony or cartilaginous part with a grooved surface over which a bone, tendon, etc, may slide or articulate

Word Origin for trochlea

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′)

An anatomical structure that resembles a pulley, especially the part of the distal end of the humerus that articulates with the ulna.
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.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.