Syn"chro*nism (?), n. [Gr. , fr. to be contemporary with, from synchronous. See Synchronous.]
1.
The concurrence of events in time; simultaneousness.
2.
The tabular arrangement of historical events and personages, according to their dates.
3. Paint.
A representation, in the same picture, of two or events which occured at different times.
© Webster 1913.