Definition of shear has definitions from the field of physics 1 [ noun ] (physics) a deformation of an object in which parallel planes remain parallel but are shifted in a direction parallel to themselves Examples "the shear changed the quadrilateral into a parallelogram" Used in print(Harry H. Hull, "The Normal Forces and Their Ther...) By the use of various weights , data for a force rate of shear graph can be obtained . This gives a rate of shear of * * f . Two of the fluids showed a high positive normal pressure when undergoing shear , and two showed small negative pressures which were negligible in_comparison_with the amount of the positive pressures generated by the other two . However , they do demonstrate the presence of large normal pressures in the presence of flat shear fields which were forecast by the theory in the first part of the paper . The actual change * * f caused by a shear field is calculated by multiplying the pressure differential times the volume , just_as_it_is for any gravitational or osmotic_pressure head . Related terms 2 [ verb ] cut with shears, as of hedges Used in print(Organic Gardening and Farming,...) A second and also good practice is to shear off the tops , leaving an inch high stub with just a leaf or two on each branch . I like to shear half my plants at_a_time , leaving one half of them to blossom while the second_half is getting_started on its new round of blooming . (Harry H. Hull, "The Normal Forces and Their Ther...) There is one exception to the above statement as has been pointed_out , and that is that fluids can relax by flowing into fields of lower rates of shear , so the statement should be modified by stating that the mechanics are similar . Related terms 3 [ verb ] cut or cut through with shears Related terms 4 [ verb ] shear the wool from Synonyms Examples "shear sheep" Related terms 5 [ noun ] (usually plural) large scissors with strong blades Synonyms Related terms 6 [ noun ] Last name, frequency rank in the U.S. is 12730 7 [ noun ] edge tool that cuts sheet metal by passing a blade through it Related terms * Rhymes with Phonetic and Homophones Similar Spelling To share this definition click "text" (Facebook, Twitter) or "link" (blog, mail) then paste text link