TUMEFY Meaning of TUMEFY in English v. (-ies, -ied) 1. intr. swell, inflate; be inflated. 2 tr. cause to do this. Derivatives: tumefacient adj. tumefaction n. Etymology: F tum{eacute}fier f. L tumefacere f. tumere swell Oxford English vocab. Оксфордский английский словарь. 2012