EFFLUX Meaning of EFFLUX in English [ef.flux] n [ML effluxus, fr. effluere] (1647) 1: something given off in or as if in a stream 2. a: effluence 2. b: a passing away: expiration -- ef.flux.ion n Merriam-Webster English vocab. Английский словарь Merriam Webster. 2012