Lewis Short
(verb) : per -călĕfăcĭo, fēci, factum (also contr. percalfactum), 3
* Pass.: per-călĕfīo, factus, fieri, to make very warm, to heat thoroughly (mostly ante- and postclass.): omnia motu Percalefacta,Lucr. 6, 178: glebae a sole percalefactae,Varr. R. R. 1, 27: multo igni percalfacto cubiculo,Val. Max. 9, 12, 4: percalefieri cogit aquam,to become very warm,Vitr. 8, 3, 4.
Charlton T. Lewis, Charles Short, A Latin Dictionary