non-coincidence

noun

1. a striking occurrence of two or more events at one time apparently by mere chance: Our meeting in Venice was pure coincidence.
2. the condition or fact of coinciding.
3. an instance of this.

noun

1. a chance occurrence of events remarkable either for being simultaneous or for apparently being connected
2. the fact, condition, or state of coinciding
3. (modifier) electronics of or relating to a circuit that produces an output pulse only when both its input terminals receive pulses within a specified intervalcoincidence gate Compare anticoincidence

n.c.1600, “exact correspondence,” from French coincidence, from coincider (see coincide). Meaning “a concurrence of events with no apparent connection” is from 1680s.