rectosigmoid

[rek″to-sig´moid] the lower portion of the sigmoid colon and the upper portion of the rectum.

rec·to·sig·moid

(rek'tō-sig'moyd), The rectum and sigmoid colon considered as a unit; the term is also applied to the junction of the sigmoid colon and rectum.

(rĕk′tō-sĭg′moid′)n.1. The rectum and the sigmoid colon considered as a unit.2. The junction of the rectum and sigmoid colon.

(rek'tō-sig'moyd) The rectum and sigmoid colon considered as a unit; the term is also applied to the junction of the sigmoid colon and rectum.