1. The state of being
synchronous.
2. For repetitive events with the same, multiple, or submultiple repetition rates, a relationship among the events such that a
significant instant of one
event bears a fixed
time relationship to a corresponding instant in another event.
Note: Synchronism is maintained when there is a fixed,
i.e. , constant,
phase relationship among the group of repetitive events.
3. The simultaneous occurrence of two or more events at the same instant on the same
coordinated time scale. (
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