synchronize

UK: /ˈsɪŋkrənaɪz/ US: /ˈsɪŋkrəˌnaɪz/ ,(sing′krə nīz′)

Inflections of 'synchronize' (v): (⇒ conjugate)

synchronizes

v 3rd person singular (US & UK)

synchronizing

v pres p (US & UK)

synchronized

v past (US & UK)

synchronized

v past p (US & UK)

WordReference Random House Learner's Dictionary of American English © 2025

syn•chro•nize /ˈsɪŋkrəˌnaɪz/   v. [~ + object] , -nized, -niz•ing. 

1. to cause to show the agreed upon time, as one clock or watch with another:
   Let's synchronize our watches and meet in an hour.
2. to cause to go on, move, operate, work, etc., at the same rate or speed or exactly together:
   The skating couple had to synchronize their movements perfectly.
3. Show Business
   • to match the sound and action in (a filmed or taped scene).

syn•chro•ni•za•tion /ˌsɪŋkrənəˈzeɪʃən/  n. [uncountable]

WordReference Random House Unabridged Dictionary of American English © 2025

syn•chro•nize  (sing′krə nīz′), v., -nized, -niz•ing. 
v.t. 

1. to cause to indicate the same time, as one timepiece with another:
   Synchronize your watches.
2. to cause to go on, move, operate, work, etc., at the same rate and exactly together:
   They synchronized their steps and walked on together.
3. Cinema, Show Business [Motion Pictures, Television.]
   • to cause (sound and action) to match precisely:
     to synchronize the sound of footsteps with the actor's movements.
   • to match the sound and action in (a scene).
4. to cause to agree in time of occurrence;
   assign to the same time or period, as in a history.
5. Electricity to adjust the periodicities of (two or more electrical or mechanical devices) so that the periods are equal or integral multiples or fractions of each other.

v.i. 

6. to occur at the same time or coincide or agree in time.
7. to go on, move, operate, work, etc., at the same rate and exactly together* recur together.

Also,[esp. Brit.,] syn′chro•nise′. 

• Greek synchronízein to be contemporary with, equivalent. to sýnchron(os) synchronous + -izein -ize
• 1615–25

syn′chro•ni•za′tion, n. 
syn′chro•niz′er, n. 

Collins Concise English Dictionary © HarperCollins Publishers::

synchronize, synchronise / ˈsɪŋkrəˌnaɪz/ verb

1. when intr, usually followed by with: to occur or recur or cause to occur or recur at the same time or in unison
2. to indicate or cause to indicate the same time: synchronize your watches
3. (transitive) to download (data) from a PC to a portable device such as an MP3 player, or to upload files from a portable device to a PC
4. (transitive) to configure (two or more electronic devices) so that any changes to the data held on one device are also implemented on the other(s)
5. (transitive) to establish (the picture and soundtrack records) in their correct relative position
6. (transitive) to designate (events) as simultaneous

ˌsynchroniˈzation, ˌsynchroniˈsation noun

ˈsynchroˌnizer, ˈsynchroˌniser noun