the foot-pound-second unit of force, equal to the force that produces an acceleration of one foot per second per second on a mass of one pound. Abbreviation:pdl
pound·al (poun'dl) n. A unit of force in the foot-pound-second system of measurement, equal to the force required to accelerate a standard one-pound mass one foot per second per second (approximately 0.138 newton).
Main Entry: pound·al Pronunciation: 'paund-&l Function: noun : a unit of force equal to the force that would give a free mass of onepound an acceleration of one foot per second per second