efflux /ˈɛflʌks/noun 2verb 2forms 3 noun2 •The process of flowing out.We all age through the efflux of time.The efflux of matter from a boil can be painful. •Something which has flowed out.Prime cheerer, light! […] Efflux divine. — 1749 verb2 •To run out; to flow forth. •(no longer used) To pass away. formseffluxed · effluxing · effluxes