designating or of the British, Canadian, and U.S. system of measurement in which the foot, pound, and second are used as the units of length, mass, and time, respectively: abbrev. FPS
See foot-pound-second in American Heritage Dictionary 4
(fo͝otˈpoundˈsĕkˈənd)
adjective Abbr. fps
Of, relating to, or characteristic of the U.S. Customary and British Imperial systems of measurement based on the foot, the pound, and the second as the fundamental units of length, mass, and time.