- Of or relating to a measurement system that uses the foot as a measure of distance, the pound as a measure of force, and the second as a measure of time. Abbreviations: ft-lb-s, fps, f.p.s.
- (of measurement system) imperial
foot-pound-second (plural foot-pound-seconds)
- A unit of mechanical power, equal to that required to raise one pound through a distance of one foot in one second.