Definition of post-synchronize in US English:

post-synchronize

verb

  • with object To add (a sound recording) to film or video footage after shooting and so as to synchronize with its images.

Origin

1930s; earliest use found in Adrian Bunel (1892–1958). From post- + synchronize.

Pronunciation

post-synchronize

/ˌpəʊs(t)ˈsɪŋkrənʌɪz/