‖ pyosisPath.|paɪˈəʊsɪs| [mod.L., a. Gr. πύωσις.] Formation of pus, suppuration. 1693tr.Blancard's Phys.Dict. (ed. 2), Pyosis, a Collection of Pus in any part of the Body.1706in Phillips (ed. 6).1842in Dunglison.1897Syd. Soc.Lex., Pyosis, the process of pus-formation.