Inflected forms: co·in·cid·ed, co·in·cid·ing, co·in·cides 1. To occupy the same relative position or the same area in space. 2. To happen at the same time or during the same period. 3. To correspond exactly; be identical. 4. To agree exactly, as in opinion; concur. See synonyms at agree.
ETYMOLOGY:
Medieval Latin coincidere : Latin co-, co- + Latin incidere, to occur; see incident.