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Meaning of flyback

fly•back

Pronunciation: (flī'bak"), [key]
— n. Electronics.
  1. the return to its starting point of the electron beam in a cathode ray tube, as after the completion of a line in a television picture or of a trace in an oscilloscope.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.