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Search Result for "deceleration": 
Wordnet 3.0

NOUN (3)

1. a decrease in rate of change;
- Example: "the deceleration of the arms race"
[syn: deceleration, slowing, retardation]

2. (physics) a rate of decrease in velocity;

3. the act of decelerating; decreasing the speed;
- Example: "he initiated deceleration by braking"

The Collaborative International Dictionary of English v.0.48:

deceleration \deceleration\ n. a decrease in velocity. Opposite of acceleration Syn: slowing, retardation. [WordNet 1.5]
Moby Thesaurus II by Grady Ward, 1.0:

71 Moby Thesaurus words for "deceleration": arrest, arrestation, catabasis, check, collapse, constraint, control, cooling, cooling down, cooling off, crash, curb, curtailment, declension, decline, decline and fall, decrescendo, delay, detention, diminuendo, dive, downtrend, downturn, drag, drop, dwindling, ease-off, ease-up, ebb, fall, flagging, hindrance, holdup, inhibition, injunction, interdict, lag, lapse, legal restraint, letdown, letup, minus acceleration, monopoly, obstruction, plunge, prohibition, protection, protectionism, protective tariff, rationing, rein, remission, restraint, restraint of trade, retardation, retardment, retreat, retrenchment, self-control, setback, slack-up, slackening, slowdown, slowing, slowing down, slowup, slump, subsidence, tariff wall, thought control, wane