【医】 regurgitant accentuated
circumfluence; refluence
【化】 back flow; circulation reflux; contra-flow; flow-back; reflux
refluxing
【医】 backflow; palirrhea; reflux reflextonus; refluxing; regurgitation
return; return current
cacophony; noise; souffle
【化】 unpitched sound
【医】 murmur; souffle; susurration; susurrus