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Meaning of fade-in

fade-in

Pronunciation: (fād'in"), [key]
— n.
  1. a gradual increase in the visibility of a scene.
  2. a gradual increase in the volume of sound, esp. of recorded or broadcast music, dialogue, or the like, usually starting from complete inaudibility.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.