definition of
coincidence

[1] #1 coincidence n. [happenstance] an event that might have been arranged although it was really accidental. wn

[2] #2 coincidence n. the quality of occupying the same position or area in space; "he waited for the coincidence of the target and the cross hairs". wn

[3] #3 coincidence n. [concurrence, conjunction, co-occurrence] the temporal property of two things happening at the same time; "the interval determining the coincidence gate is adjustable". wn