A scalar measure of the rate of movement of a body expressed either as the distance travelled divided by the time taken (average speed) or the rate of change of position with respect to time at a particular point (instantaneous speed). It is measured in metres per second, miles per hour, etc.
To move faster.
An addictive psychoactive drug of formula Cв‚Ѓв‚ЂHв‚Ѓв‚…N.
To cause to move faster.
To move fast.
cause to move faster; "He accelerated the car"
move faster; "The car accelerated"
a central nervous system stimulant that increases energy and decreases appetite; used to treat narcolepsy and some forms of depression
the ratio of the focal length to the diameter of a (camera) lens system
step on it; "He rushed down the hall to receive his guests"; "The cars raced down the street"
travel at an excessive or illegal velocity; "I got a ticket for speeding"
changing location rapidly
a rate (usually rapid) at which something happens; "the project advanced with gratifying speed"
distance travelled per unit time
move very fast
move very fast; "The runner zipped past us at breakneck speed"
