colorectum

noun
co·​lo·​rec·​tum | \ ˌkō-lə-ˈrek-təm, ˌkäl-ə- How to pronounce colorectum (audio) \
plural colorectums or colorecta\ -​tə How to pronounce colorecta (audio) \

Medical Definition of colorectum

: the colon and the rectum Similar risks across time intervals were observed among participants with a history of adenoma in the proximal colon or distal colorectum.— Reiko Nishihara et al., The New England Journal of Medicine, 10 Sept. 2013