1.Definition: an event that might have been arranged although it was really accidental

Related Noun(s):happenstance

Category: General

2.Definition: the quality of occupying the same position or area in space

"He waited for the coincidence of the target and the cross hairs"

Category: General

3.Definition: the temporal property of two things happening at the same time

"The interval determining the coincidence gate is adjustable"

Related Noun(s):concurrence, conjunction

Category: General