Douglas Harper's Etymology Dictionary
Wiktionary
a. (context anatomy English) Of or pertaining to the colorectum
WordNet
adj. relating to or affecting the colon and the rectum; "most colorectal cancers arise from adenomatous polyps"
Usage examples of "colorectal".
A devoutly religious experimental oncologist dying of his own inoperable colorectal neoplastis moans Why oh why Lord do You give this man this idiotic picayune power and I no power over my own ravening colorectal cells.
I say, "attesting to the seriousness of my condition, namely chronic colorectal diverticulosis.
At least you don’t have some three-hundred-pound cellmate named Bubba who wants to give you a colorectal exam.
Codon 12 of the c-K-ras gene could be supplemented with a single nucleotide, and therefore went the risk of most pancreatic carcinomas and a lot of the colorectal ones, too.