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1. An adjustment that causes something to occur or recur in unison
   - synchronization, synchronisation [Brit], synchronizing
    
2. The relation that exists when things occur at the same time
   - synchronism, synchrony, synchronicity, synchroneity, synchronization, synchronisation [Brit], synchronizing, synch, sync
    
3. Coordinating by causing to indicate the same time
   "the synchronising of their watches was an important preliminary";
   - synchronization, synchronisation [Brit], synchronizing

1. Happen at the same time
   - synchronize, contemporize, contemporise [Brit]
    
2. (movie) make (motion picture sound) exactly simultaneous with the action
   "synchronise this film";
   - synchronize
    
3. Arrange or represent events so that they co-occur
   "synchronise biblical events";
   - synchronize, contemporize, contemporise [Brit]
    
4. Operate simultaneously
   "The clocks synchronise";
   - synchronize
    
5. Cause to indicate the same time or rate
   "synchronise your watches";
   - synchronize
    
6. Make synchronous and adjust in time or manner
   "Let's synchronise our efforts";
   - synchronize, sync, synch

Type of: adjust, adjustment, align, aline [non-standard], alter, arrange, change, come about, control, coordination, correct, fall out, go on, hap, happen, line up, modify, occur, operate, order, pass, pass off, put, readjustment, registration, set, set up, take place, temporal relation

Antonym: desynchronise [Brit]

Encyclopedia: Synchronising