1. the final section of the large intestine, ending at the anus
Usage: medical; anatomy

Examples

• The doctor explained that the rectum is part of the digestive system.
• A colonoscopy examines the colon and rectum for abnormalities.
• The rectum stores waste before elimination from the body.
• Rectal bleeding should be evaluated by a medical professional.
• The anatomy textbook showed a diagram of the rectum and surrounding organs.