darcy(redirected from Millidarcy)
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A unit used to measure the permeability of porous substances such as soil, equal to the passage of 1 cubic centimeter of fluid having a viscosity of 1 centipoise for 1 second under the pressure of 1 atmosphere through a medium having a volume of 1 cubic centimeter.
[After Henry Philibert Gaspard Darcy.]
(Units) geology a unit expressing the permeability coefficient of rock. Symbol: D
[named after Henri-Philibert-Gaspard Darcy (1803–58), French hydraulic engineer]
(Biography) (James) Les(lie). 1895–1917, Australian boxer and folk hero, who lost only five professional fights and was never knocked out, considered a martyr after his death from septicaemia during a tour of the United States