Akademik

shear
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. [A.S.]

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(shēr) 1. an applied force that tends to cause an opposite but parallel sliding motion of the planes of an object. 2. the strain resulting from such force.

Medical dictionary. 2011.