"shear force." YourDictionary, n.d. Web. 15 January 2019. <https://www.yourdictionary.com/shear-force>.
shear force. (n.d.). Retrieved January 15th, 2019, from https://www.yourdictionary.com/shear-force
A force acting in a direction parallel to a surface or to a planar cross section of a body, as for example the pressure of air along the front of an airplane wing. Shear forces often result in shear strain. Resistance to such forces in a fluid is linked to its viscosity. Also called shearing force