Meaning of out-of-sync

out-of-sync

Pronunciation: (out'uv-singk'), [key]
— adj., adv.
  1. (in the editing or projection of film) referring to any situation in which the sound does not correspond to the lip movements of an actor or to any other sound source on the screen.
  2. not synchronized.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.