shear(redirected from been shorn)
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an applied force that tends to cause an opposite but parallel sliding motion of the planes of an object. Such motions cause tissues and blood vessels to move in such a way that blood flow may be interrupted, placing the patient at risk for pressure ulcers. An example of a shearing force is seen when a patient slumps in a chair; the skin around the buttocks is stretched by the movement and interferes with circulation.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.
The distortion of a body by two oppositely directed parallel forces. The distortion consists of a sliding over one another of imaginary planes (within the body) parallel to the planes of the forces.
Farlex Partner Medical Dictionary © Farlex 2012
v. sheared, sheared or shorn (shôrn), shearing, shears
1. To remove (fleece or hair) by cutting or clipping.
2. To remove the hair or fleece from.
To use a cutting tool such as shears.
1. often shears
a. A pair of scissors.
b. Any of various implements or machines that cut with a scissorlike action.
2. The act, process, or result of shearing, especially when used to indicate a sheep's age: a two-shear ram.
3. Something cut off by shearing.
The American Heritage® Medical Dictionary Copyright © 2007, 2004 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved.
Distortion of a body by two oppositely directed parallel forces; consists of a sliding over one another of imaginary planes (within body) parallel to planes of forces.
Medical Dictionary for the Dental Professions © Farlex 2012