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Meaning of retrorocket

ret•ro•rock•et

Pronunciation: (re'trō-rok"it), [key]
— n.
  1. a small, auxiliary rocket engine, forming a part of a larger rocket vehicle and having its exhaust nozzle pointed toward the direction of flight, for decelerating the larger rocket, separating one stage from another, etc.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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