(adj) occurring or existing at the same time or having the same period or phase; - Jour.A.M.A., Syn. synchronal, synchronic, Ant. asynchronous, Example:recovery was synchronous with therapy; a synchronous set of clocks; the synchronous action of a bird's wings in flight; synchronous oscillations
(adj) (digital communication) pertaining to a transmission technique that requires a common clock signal (a timing reference) between the communicating devices in order to coordinate their transmissions, Ant. asynchronous