Lewis & Short

dēfluxĭo, ōnis, f. [defluo], a flowing off, discharge (lat. Lat.): seminis, Firm. Math. 3, 7; ventris, Coel. Aur. Acut. 2, 18.
Absol. = διάρ’ῤοια, diarrhoea, id. ib. 3, 22.