P / perfrictĭo
noun

perfrictĭo

gen. perfrictōnis · gender feminine · decl. 3rd
perfrigesco
a catching cold; a violent cold
a catching cold, a violent cold (post-Aug.), Plin. 20, 14, 55, § 156.—In plur., Plin. 26, 12, 76, § 124 al.; Scrib. Comp. 57, 257.