Origin: Greek prefix syn-
Synchronous has 3 different meanings across 1 category:
occurring or existing at the same time or having the same period or phase
"recovery was synchronous with therapy"
"a synchronous set of clocks"
"the synchronous action of a bird's wings in flight"
"synchronous oscillations"
(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
"The network engineer had to manually synchronize the two servers' clocks because the synchronous data transfer failed whenever there was even a microsecond of drift."
At the same time, at the same frequency.
"The two clocks were perfectly synchronous, ticking in unison every second without any lag."