To agree in time; to be simultaneous.
- To occur at the same time; be simultaneous.
- To operate in unison.
- To cause to occur or operate with exact coincidence in time or rate: We synchronized our watches.
- To cause to occur or operate at the same time as something else: They synchronized their trip with the annual tulip festival.
- To arrange (historical events) in a synchronism so as to indicate parallel occurrence.
- To cause (soundtrack and action) to match exactly in a film.