in ‧ sti ‧ tu ‧ tion ‧ al AC /ˌɪnstəˈtjuːʃ ə nəl, ˌɪnstɪˈtjuːʃ ə nəl $ -ˈtuː-/ BrE AmE adjective [usually before noun]
1 . relating to an institution:
children in institutional care
2 . institutional attitudes and behaviour have existed for a long time in an organization and have become accepted as normal even though they are bad:
accusations of institutional racism in the police force