1. make synchronous and adjust in time or manner

    e.g. Let's synchronize our efforts

    Synonym: synchronizesync

2. cause to indicate the same time or rate

    e.g. synchronize your watches

    Synonym: synchronize

3. operate simultaneously

    e.g. The clocks synchronize

    Synonym: synchronize

4. arrange or represent events so that they co-occur

    e.g. synchronize biblical events

    Synonym: synchronizecontemporizecontemporise

5. make (motion picture sound) exactly simultaneous with the action

    e.g. synchronize this film

    Synonym: synchronize

6. happen at the same time

    Synonym: synchronizecontemporizecontemporise