torsion

torsion

 [tor´shun]

the act of twisting; the state of being twisted. adj., adj tor´sive.

Testicular torsion. From Copstead and Banasik, 2000.

tibial torsion inward twisting of the tibia so that the foot turns inward.

Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.

tor·sion

(tōr'shŭn),

1. A twisting or rotation of a part on its long axis or on its mesentery; often associated with compromise of the blood supply.
See also: intorsion, extorsion, dextrotorsion, levotorsion.

2. Twisting of the cut end of an artery to arrest hemorrhage.
See also: intorsion, extorsion, dextrotorsion, levotorsion.

3. Rotation of the eye around its anteroposterior axis.
See also: intorsion, extorsion, dextrotorsion, levotorsion.

[L. torsio, fr. torqueo, to twist]

Farlex Partner Medical Dictionary © Farlex 2012

tor·sion

(tōr'shŭn)

1. A twisting or rotation of a part on its long axis.

2. Twisting of the cut end of an artery to arrest hemorrhage.

3. Rotation of the eye around its anteroposterior axis.
See also: intorsion, extorsion, dextrotorsion, levotorsion

[L. torsio, fr. torqueo, to twist]

Medical Dictionary for the Health Professions and Nursing © Farlex 2012

torsion

Twisting or rotation, especially of a part that hangs loosely on a narrow support. Torsion may affect a loop of bowel or other organ and commonly results in dangerous obstruction to the blood supply of the part. Urgent surgical correction may be needed.

Collins Dictionary of Medicine © Robert M. Youngson 2004, 2005

torsion

a phenomenon occurring in embryonic gastropods in which the visceral hump rotates through 180°.

Collins Dictionary of Biology, 3rd ed. © W. G. Hale, V. A. Saunders, J. P. Margham 2005

Torsion

the action of twisting

Mentioned in: Ovarian Torsion

Gale Encyclopedia of Medicine. Copyright 2008 The Gale Group, Inc. All rights reserved.

torsion 

Rotation of an eye about an anteroposterior axis. If the upper pole of the vertical meridian of the cornea appears to rotate inward, it is called intorsion, and outward, extorsion. If the eye rotates to the right it may be called dextrotorsion and if it rotates to the left it may be called laevotorsion. It may occur as a result of a head tilt, extraocular muscle weakness or rotation of the eye to a tertiary position. Syn. cycloductin; cyclorotation; torsional movement. See Donder's law; tertiary position; incongruous hemianopia.

Millodot: Dictionary of Optometry and Visual Science, 7th edition. © 2009 Butterworth-Heinemann

tor·sion

(tōr'shŭn)

1. In dentistry, twisting or rotation of tooth part on its long axis.

2. Twisting cut end of an artery to arrest hemorrhage.

[L. torsio, fr. torqueo, to twist]

Medical Dictionary for the Dental Professions © Farlex 2012