APOSTEME, Ἀπόστημα, Apostume, in Medicine, a preternatural Tumor; called also Abscess and Imposthume. See ABSCESS and IMPOSTHUME. The Word is formed of the Greek ἀπόστημα (apostēma) which comes from the Verb ἀποστήσας (apostēsas), abscēdere, to depart from one place and fix in another; alluding to the manner wherein the Tumor is usually formed of a translated Humor. See DERIVATION, FRUXION, REVULSION, etc.