膿のう瘡そうMeanings1nounecthymamedicineMedical term for a deep skin infection with ulceration and crusting, often caused by streptococci or staphylococci.膿のう瘡そうは、主おもに小しょう児にの下か肢しに好こう発はつする細さい菌きん感かん染せん症しょうです。Ecthyma is a bacterial infection that commonly occurs on the lower legs of children.