tumefy/ˈt(j)uːmɪfaɪ/EtymologyFrom French tuméfier, from Latin tumefaciō, ultimately from tumeō, from Proto-Indo-European *tum-éh₁- (“to be swelling”), stative stem of *tum- (“to swell”).verbTo cause to swell.“to swell, tumefy, stiffen, not the diction only, but the tenor of the thought”To swell; to rise into a tumour.“[…] Lanfrank takes Notice of Tract. 3. Doct. 3. cap. 18. ſaying, "I have ſeen many who being full of Humours, have made an Iſſue under the Knee, before due Purgation had been premis'd; whence, by reaſon of the too great Defluxion of Humours, the Legs tumified, ſo that the cauterized Place corrupted, and a Cancer (or rather cacoethic Ulcer) was thereby made, with which great Difficulty was cur'd."”