a step in walking or running | changing location rapidly |
the relative speed of progress or change | a central nervous system stimulant that increases energy and decreases appetite; used to treat narcolepsy and some forms of depression |
a unit of length equal to 3 feet; defined as 91.44 centimeters; originally taken to be the average length of a stride | a rate (usually rapid) at which something happens |
the distance covered by a step | the ratio of the focal length to the diameter of a (camera) lens system |
the rate of moving (especially walking or running) | distance travelled per unit time |
the rate of some repeating event | |