noun🔗ShareReflux, contre-courantThe flow of a fluid (through a pipe etc) in a direction opposite to that which is normal or intended."The plumber installed a backflow preventer to stop the dirty water from the drain from causing a backflow into the clean water pipes. "Le plombier a installé un dispositif anti-refoulement pour empêcher l'eau sale de l'égout de provoquer un reflux dans les tuyaux d'eau propre.utilitytechnicalsystemdirectionprocessChat with AIVocabulary GamePractice Reading