ALL meanings of deceleration
de·cel·er·ate
D d - verb with object deceleration to decrease the velocity of: He decelerates the bobsled when he nears a curve. 1
- verb with object deceleration to slow the rate of increase of: efforts to decelerate inflation. 1
- verb without object deceleration to slow down: The plane decelerated just before landing. 1
- noun deceleration (uncountable) The act or process of decelerating. 1
- noun deceleration (Countable Noun) The amount by which a speed or velocity decreases (and so a scalar quantity or a vector quantity). 0