synchronous

Synchronous refers to the simultaneity in time of two or more events.

Synchronization can refer to physical events, such as a specific point in time in an oscillation or pulse, for example the rising edge. It can also refer to communication partners performing a particular action at the same time, as in synchronous transmission or in the processing of a protocol, or, as in the case of television, to the synchronization of field, line, and color signal at the receiver.