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1. Combining audio and video recording in such a way that the sound is perfectly synchronized with the action that produced it; especially synchronizing the movements of a speaker's lips with the sound of his speech
   - lip synchronization, lip synchronisation [Brit], lip synch

1. Move the lips in synchronization (with recorded speech or song)
   "We take lip-sync for granted in live-action film"
   - lip-synch

Derived forms: lip-syncing, lip-syncs, lip-synced

Type of: mouth, recording, transcription

Encyclopedia: Lip sync