Faecalith Health Dictionary

A small, hard piece of impacted faeces that forms in a sac in the wall of the intestine.

A faecalith is harmless unless it blocks the entrance to the sac, causing diverticulitis, or to the appendix, causing appendicitis.

(faecolith, coprolith) n. a hard mass of faeces within the colon, vermiform appendix, or rectum, due to chronic constipation: a cause of inflammation.