mephītis, is, f., a noxious, pestilential exhalation from the ground, mephitis. Lit.: saevamque exhalat opaca mephitim, Verg. A. 7, 84: sulphureae, Pers. 3, 99.
— Personified: Mephītis (Mefi-tis), is, f., a goddess who averts pestilential exhalations, Tac. H. 3, 34; Plin. 2, 93, 95, § 208; Inscr. Orell. 1795; cf. Serv. Verg. A. 7, 84: lucus Mephitis, Varr. L. L. 5, 7, § 49 Mull.: aedes, Paul. ex Fest. 351, 3.