A person is considered to be legally blind if he or she has a best-corrected vision of 20/200 in their best-seeing eye. Many people feel that they are legally blind because when they remove their glasses or contact lenses, they cannot see a foot in front of their face.
â¢ SHEAR (noun). The noun SHEAR has 2 senses: 1. (physics) a deformation of an object in which parallel planes remain parallel but are shifted in a direction parallel to themselves. 2. a large edge tool that cuts sheet metal by passing a blade through it. Familiarity information: SHEAR used as a noun is rare.â¢ SHEAR (verb). The verb SHEAR has 3 senses: 1. cut with shears. 2. shear the wool from. 3. cut or cut through with shears. Familiarity information: SHEAR used as a verb is uncommon.. a large edge tool that cuts sheet metal by passing a blade through it. Familiarity information: SHEAR used as a noun is rare. â¢ SHEAR (verb). The verb SHEAR has 3 senses: 1. cut with shears. 2. shear the wool from. 3. cut or cut through with shears. Familiarity information: SHEAR used as a verb is uncommon.
Specifically, the term most often refers to the planetary boundary layer, which is the layer within which the effects of friction are significant. For the earth, this layer is considered to be roughly the lowest one or two kilometers of the atmosphere.ariation in wind speed and/or direction over a short distance. Shear usually refers to vertical wind shear, i.e., the change in wind with height, but the term also is used in Doppler radar to describe changes in radial velocity over short horizontal distances.