The Collaborative International Dictionary
Aposteme
Aposteme \Ap"os*teme\, n. [L. apostema, Gr. ? the separation of corrupt matter into an ulcer, fr. ? to stand off: cf. F. apost[`e]me. See Apostasy.] (Med.) An abscess; a swelling filled with purulent matter. [Written corruptly imposthume.] [1913 Webster] ||
Wiktionary
aposteme
n. (context medicine English) An abscess; a pustulent swelling.