Rectum

**Semantic type:** Body Part, Organ, or Organ Component

**Definition:** The terminal portion of the gastrointestinal tract, extending from the rectosigmoid junction to the anal canal.

**Synonyms:** - Hemorrhoidal - LARGE INTESTINE, RECTUM - RECTUM - Rectum structure (body structure) - Rectum, NOS - rectum - rectum - terminal portion of intestine