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trochlea

American  
[trok-lee-uh] / ˈtrɒk li ə /

noun

Anatomy.
  • trochleae,
    plural
  • trochleas
    plural
  1. a pulleylike structure or arrangement of parts.


trochlea British  
/ ˈtrɒklɪə /

noun

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

"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

Other Word Forms

Noun Inflected Forms

Etymology

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

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

A good example is the elbow joint, with the articulation between the trochlea of the humerus and the trochlear notch of the ulna.

From Textbooks Jun. 19, 2013

The angle of the tendon through the trochlea means that contraction of the superior oblique rotates the eye medially.

From Textbooks Jun. 19, 2013

However, the tendon of the oblique muscles threads through a pulley-like piece of cartilage known as the trochlea.

From Textbooks Jun. 19, 2013

This region articulates with the trochlea of the humerus as part of the elbow joint.

From Textbooks Jun. 19, 2013

Its superior extremity is moulded on the inferior extremity of the principal metacarpal, and its inferior extremity, which is smaller, presents a trochlea with which the second phalanx articulates.

From Artistic Anatomy of Animals by ?douard Cuyer

This operation has been found a corrective in cases of outward luxation as well as those of upward dislocation of the patella when resorted to before the trochleae are worn from frequent luxation.

From Lameness of the Horse Veterinary Practitioners' Series, No. 1 by John Victor Lacroix

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