Shear as a noun may refer to:

  • Bias (textile), in clothing design, fabric may be cut on the shear
  • Cosmic shear, an effect of distortion of image of distant galaxies due to deflection of light by matter, as predicted by general relativity (see also gravitational lens)
  • Shear (geology), a form of fault in rocks
  • Simple shear, a special case of deformation of a fluid
  • Shear (fluid), in fluid dynamics, refers to the shear stresses and responses thereto in fluids
  • Shear mapping, a particular type of mapping in linear algebra, also called transvection
  • Shear rate, a gradient of velocity in a flowing material
  • Shear stress in physics, refers to a stress state that will cause shearing (see verb) when it exceeds a material's shear strength
  • Shear matrix in geometry, a linear transformation shearing a space
  • Shear strength, shear strength
  • Shear strength (soil), the shear strength of soil under loading
  • Shear line (locksmithing), where the inner cylinder ends and the outer cylinder begins in a cylinder lock
  • Shear line (meteorology), an area of wind shear
  • Wind shear, a difference in wind speed or direction between two wind currents in the atmosphere
  • Shear wall, a wall composed of braced panels to counter the effects of lateral load acting on a structure
  • Shear forming, different from conventional metal spinning in that a reduction of the wall thickness is induced
  • Shear (sheet metal), various tools to shear sheet metal
  • Cornelius Lott Shear, an American mycologist and plant pathologist identified by the author abbreviation Shear when citing a botanical name

Shear as a verb or shearing may refer to:

  • Shearing (physics), the deformation of a material substance in which parallel internal surfaces slide past one another
  • Shearing (manufacturing), a metalworking process which cuts stock without the formation of chips or the use of burning or melting
  • Shearing interferometer, in optics, a simple and very common means to check the collimation of beams by observing interference
  • Shearing animals, the collection of wool from various species. Sheep shearing is most common. See the article on "Wool" for other species
  • Shearing in computer graphics, more commonly called page tearing

SHEAR as an acronym may refer to:

  • Society for Historians of the Early American Republic, dealing with United States History 1775-1861