coloproctostomy

noun
co·​lo·​proc·​tos·​to·​my | \ ˌkō-lə-ˌpräk-ˈtäs-tə-mē, ˌkäl-ə- How to pronounce coloproctostomy (audio) \
plural coloproctostomies

Medical Definition of coloproctostomy

: surgical formation of an artificial passage between the colon and the rectum