os·sifyBrE/ˈɒsɪfaɪ/NAmE/ˈɑːsɪfaɪ/verbpresent simple - I / you / we / theyossifyBrE/ˈɒsɪfaɪ/NAmE/ˈɑːsɪfaɪ/present simple - he / she / itossifiesBrE/ˈɒsɪfaɪz/NAmE/ˈɑːsɪfaɪz/past simpleossifiedBrE/ˈɒsɪfaɪd/NAmE/ˈɑːsɪfaɪd/past participleossifiedBrE/ˈɒsɪfaɪd/NAmE/ˈɑːsɪfaɪd/ -ing formossifyingBrE/ˈɒsɪfaɪɪŋ/NAmE/ˈɑːsɪfaɪɪŋ/[usually passive][I, T, usually passive]~ (sth)(formal, disapproving) tobecomeormakesthfixedandunabletochange（使）僵化；（使）固定不变◆anossifiedpoliticalsystem僵化的政治制度[I, T, usually passive]~ (sth)(specialist) tobecomeormakesthhardlikebone使骨化；骨质化▸os·si·fi·ca·tionBrE/ˌɒsɪfɪˈkeɪʃn/NAmE/ˌɑːsɪfɪˈkeɪʃn/noun[U]