ul·cer·ateBrE/ˈʌlsəreɪt/NAmE/ˈʌlsəreɪt/verbpresent simple - I / you / we / theyulcerateBrE/ˈʌlsəreɪt/NAmE/ˈʌlsəreɪt/present simple - he / she / itulceratesBrE/ˈʌlsəreɪts/NAmE/ˈʌlsəreɪts/past simpleulceratedBrE/ˈʌlsəreɪtɪd/NAmE/ˈʌlsəreɪtɪd/past participleulceratedBrE/ˈʌlsəreɪtɪd/NAmE/ˈʌlsəreɪtɪd/ -ing formulceratingBrE/ˈʌlsəreɪtɪŋ/NAmE/ˈʌlsəreɪtɪŋ/[I, T, usually passive]~ (sth)(medical医学) tobecome, ormakesthbecome, coveredwithulcers(使)形成溃疡,溃烂▸ul·cer·ationBrE/ˌʌlsəˈreɪʃn/NAmE/ˌʌlsəˈreɪʃn/noun[U, C]