Meaning

adjective occurring or operating at the same time

adjective matching point for point

originThe adjective is borrowed from French coïncident, from Medieval Latin coincidentem, an accusative singular form of Latin coincidēns (“coinciding”), the present active participle of coincidō (“to coincide”), from co- (variant of con- (prefix denoting a being or bringing together of several objects)) + incidō (“to fall into any condition”) (ultimately from Proto-Indo-European *ḱh₂d- (“to fall”)).…

Etymology from Wiktionary, CC BY-SA 3.0