(ˈ)pwä|zə(r)z-, -zə̄z- noun
Usage: usually capitalized P
Etymology: after Jean L. M. Poiseuille died 1869 French physician
: a statement in physics: the velocity of flow of a liquid through a capillary tube varies directly as the pressure and the fourth power of the diameter of the tube and inversely as the length of the tube and the coefficient of viscosity