Harmony.
A music synchronization license, allowing the music to be synchronized with visual media such as films.
To synchronize, especially in the senses of data synchronization, time synchronization, or synchronizing music with video.
To flush all pending I/O operations to disk.
The state of being in harmony or agreement; harmonious agreement or togetherness, synchronisation.
A sound or note having the same pitch as another, especially when used as the base note for an interval; a unison string.
Identical pitch between two notes or sounds; the simultaneous playing of notes of identical pitch (or separated by one or more octaves).
Two or more voices speaking the same words together.