noun
Etymology: translation of New Latin appendix vermiformis
: a narrow blindly ending tube usually about three or four inches long that extends from the cecum in the lower right-hand part of the abdomen in a direction which varies in different individuals, that has much lymphoid wall tissue, that normally communicates with the cavity of the cecum, and that represents an atrophied terminal part of the cecum — called also vermiform process ; compare appendicitis ; see digestion illustration