(obsolete in general sense) Something attached to something else; an attachment or accompaniment. / A text added to the end of a book or an article, containing additional information.

plural of appendix

(anatomy) An organ consisting of a blind tube projecting from the caecum. Of disputed function (if any), it is known for inflammation in humans.

(mycology) The part of a spore which attaches to the sterigmata at the end of a basidium.

plural of vermiform appendix

(anatomy) The appendix of the auricle of the heart.

(anatomy) Any of the small pouches of the peritoneum that are filled with fat and situated along the colon, but absent in the rectum.

Without an appendix (bodily organ).