From The Collaborative International Dictionary of English v.0.48 [gcide]:
Synchronize \Syn"chro*nize\, v. i. [imp. & p. p. Synchronized;
p. pr. & vb. n. Synchronizing.] [Gr. ?.]
To agree in time; to be simultaneous.
[1913 Webster]
The path of this great empire, through its arch of
progress, synchronized with that of Christianity. --De
Quincey.
[1913 Webster]
From WordNet (r) 3.0 (2006) [wn]:
synchronized
adj 1: operating in unison; "the synchronized flapping of a
bird's wings" [syn: synchronized, synchronised]