1. Occurring, existing, or functioning at the same time.
2. (of a system or process) Characterized by the simultaneous occurrence of events.
3. (of a device or circuit) Operating in time with another.
4. (of a motor) Running at the same speed as another motor.
5. (of a transmission) Occurring at the same time as the source signal.
Here are some examples of how "synchronous" is used in a sentence:
* The dancers moved in synchronous rhythm.
* The two clocks were perfectly synchronous.
* The computer system uses synchronous communication to transfer data.
* The engines are synchronous and run at the same speed.
* The broadcast was synchronous with the live event.