Digestion Essay The path of digestion begins in the mouth when food is broken down mechanically, into smaller pieces, by the teeth and tongue. The complex carbohydrates found in the food are also broken down chemically with the help of the enzyme (ptyalin), found in saliva.
apparent viscosity. (fluid mechanics). The value obtained by applying the instrumental equations used in obtaining the viscosity of a Newtonian fluid to viscometer measurements of a non-Newtonian fluid. 1  Facebook. 2  Twitter.
Medical Definition of VISCOSITY. 1. : the quality of being viscous; especially: the property of resistance to flow in a fluid or semifluid. 2.: the ratio of the tangential frictional force per unit area to the velocity gradient perpendicular to the direction of flow of a liquidâcalled also coefficient of viscosity.. : the quality of being viscous; especially: the property of resistance to flow in a fluid or semifluid. 2. : the ratio of the tangential frictional force per unit area to the velocity gradient perpendicular to the direction of flow of a liquidâcalled also coefficient of viscosity.