deceleration

de·cel·er·ate  (d-sl-rt)

v. de·cel·er·at·ed, de·cel·er·at·ing, de·cel·er·ates

v.tr.

1. To decrease the velocity of.

2. To slow down the rate of advancement of: measures intended to decelerate the arms buildup.

v.intr.

To decrease in velocity.

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[de- + (ac)celerate.]

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de·celer·ation n.

de·celer·ator n.

Thesaurus

Noun	1.	deceleration - a decrease in rate of change; "the deceleration of the arms race" retardation, slowing alteration, change, modification - an event that occurs when something passes from one state or phase to another; "the change was intended to increase sales"; "this storm is certainly a change for the worse"; "the neighborhood had undergone few modifications since his last visit years ago" acceleration - an increase in rate of change; "modern science caused an acceleration of cultural change"
	2.	deceleration - (physics) a rate of decrease in velocity natural philosophy, physics - the science of matter and energy and their interactions; "his favorite subject was physics" rate - a magnitude or frequency relative to a time unit; "they traveled at a rate of 55 miles per hour"; "the rate of change was faster than expected" acceleration - (physics) a rate of increase of velocity
	3.	deceleration - the act of decelerating; decreasing the speed; "he initiated deceleration by braking" hurrying, speeding, speed - changing location rapidly speedup, acceleration, quickening - the act of accelerating; increasing the speed