- (pl. cingula) A curved bundle of nerve fibers in each cerebral
hemisphere, which nearly encircles its connection with the corpus
callosum. The cingulum is a part of the brain concerned with anger
and depression. The surgical removal of the cingulum, a procedure known
as cingulectomy, has occasionally been carried out
in some cases of intractable mental illness.
- A small protuberance on the lingual surface of the crowns of incisor
and canine teeth.