polyposis

noun
pol·​yp·​o·​sis | \ ˌpäl-i-ˈpō-səs How to pronounce polyposis (audio) \
plural polyposes\ -​ˌsēz How to pronounce polyposes (audio) \

Medical Definition of polyposis

: a condition characterized by the presence of numerous polyps polyposis of the colon — see familial adenomatous polyposis