C / călĕfactĭo
noun

călĕfactĭo

gen. călĕfactōnis · gender feminine · decl. 3rd
a warming; heating
a warming, heating (post-Aug.): balnei publici, Dig. 50, 4, 18, § 4.—In plur.: calefactiones thermarum, Dig. 50, 4, 1, § 2.