The definition of coincide means to take place at the same time or to agree.
(verb)See coincide in Webster's New World College Dictionary
intransitive verb coincided, coinciding
Origin: Fr coincider < ML coincidere < L co-, together + incidere, to fall upon: see incident
See coincide in American Heritage Dictionary 4
intransitive verb co·in·cid·ed, co·in·cid·ing, co·in·cides
Origin:
Origin: Medieval Latin coincidere
Origin: : Latin co-, co-
Origin: + Latin incidere, to occur; see incident
.Learn more about coincide