effluxion /ɛˈflʌk.ʃən/noun 2forms 1phrases 1 noun2 •The process of flowing out.We all age through the effluxion of time.The effluxion of matter from a boil can be painful. •That which has flowed out. formseffluxions Phrases with effluxion effluxion of timeThe passage of time, especially as a cause of change in itself.