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Meaning of retrofire

ret•ro•fire

Pronunciation: (re'trō-fīr"), [key]
— v., -fired, -fir•ing.
—v.t.
  1. to ignite (a retrorocket).
—v.i.
  1. (of a retrorocket) to become ignited.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.