non-specific urethritisBrE /ˌnɒn spəˌsɪfɪk ˌjʊərəˈθraɪtɪs/ 🔊NAmE /ˌnɑːn spəˌsɪfɪk ˌjʊrəˈθraɪtɪs/ 🔊 noun [uncountable] (abbreviation NSU) (medical 医学) a condition in which the urethra becomes sore and swollen. It is often caused by an infection caught by having sex. 非特异性尿道炎(多因性交感染)