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retouch
retrace
retracement
retract
retractile
retraction
retractor
retrain
retraining
retread
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retrorocket

ret·ro·rock·et [ réttrō ròkət ] (plural ret·ro·rock·ets)


noun 
Definition:
 
reverse thrust rocket: a small rocket engine on a spacecraft or missile that produces thrust to act against the main engines, used for decelerating

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