rectosigmoid adjective 1noun 1forms 1 adjective1 •Of the rectum and the sigmoid colon; especially, of the junction between them.Lenox Hill finds “considerable stool material in the descending colon as well as the rectosigmoid region.” My doctor diagnoses a combination of slow transit and outlet constipation. — 2022 noun1 •A rectosigmoid junction. formsrectosigmoids
