Noun
1. the temporal property of two things happening at the same time;
"the interval determining the coincidence gate is adjustable"2. the state of being joined together
3. an uninflected function word that serves to conjoin words or phrases or clauses or sentences
4. the grammatical relation between linguistic units (words or phrases or clauses) that are connected by a conjunction
5. (astronomy) apparent meeting or passing of two or more celestial bodies in the same degree of the zodiac
6. something that joins or connects