per-fervĕfīo — Lewis & Short
per-fervĕfīo, fĭĕri, v. n.,
I to become very hot (ante-class.).—In tmesi:
terra sole perferve ita fit, ut, etc.,Varr. R. R. 1, 9, 2 dub. (acc. to Gesn. and Schneid. a gloss).