ˈdärsē noun
( -s )
Etymology: after Henri P.G. Darcy died 1858 French hydraulic engineer
: a unit of porous permeability in physics equal to the permeability of a medium through which the rate of flow of a fluid having one centipoise viscosity under a pressure gradient of one atmosphere per centimeter would be one cubic centimeter per second per square centimeter cross section — compare darcy's law