1.
moving or working at exactly the same time and speed as sb/sth else :
The soundtrack is not in sync with the picture.
2.
in agreement with sb/sth; working well with sb/sth :
His opinions were in sync with those of his colleagues.
1.
moving or working at exactly the same time and speed as sb/sth else :
The soundtrack is not in sync with the picture.
2.
in agreement with sb/sth; working well with sb/sth :
His opinions were in sync with those of his colleagues.
Oxford Advanced Learner's English Dictionary. Оксфордский английский словарь для изучающик язык на продвинутом уровне. 2005