Longman Dictionary of Contemporary English homepage

synchronize

verb
     
syn‧chro‧nize also synchronise British English
1 [intransitive and transitive] to happen at exactly the same time, or to arrange for two or more actions to happen at exactly the same time
synchronize something with something
Businesses must synchronize their production choices with consumer choices.
2

synchronize your watches

TM to make two or more watches show exactly the same time
synchronization noun [uncountable]

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