postoperative UK /pəʊstˈɒpəɹətɪv/US /poʊstˈɑpəɹətɪv/adjective 1noun 1forms 1 adjective1 •Of, relating to, or occurring in the period after a surgical operation.The postoperative procedure is as follows. noun1 •A transgender person who has undergone gender reassignment surgery. formspostoperatives