POSTOP Meaning of POSTOP in English /pohst"op'/ , Informal.adj.1. postoperative. adv.2. postoperatively: We'll have to see how he does postop.Also, post-op . [ 1970-75; by shortening ] Random House Webster's Unabridged English dictionary. Полный английский словарь Вебстер - Random House . 2012