di·ver·tic·u·lum 
(dī′vûr-tĭkyə-ləm)
(dī′vûr-tĭkyə-ləm)n. pl. di·ver·tic·u·la (-lə)
A pouch or sac branching out from a hollow organ or structure, such as the intestine.
[New Latin, from Latin dēverticulum, by-path, from dēvertere, to turn aside : dē-, de- + vertere, to turn; see DIVERT.]
di′ver·ticu·lar adj.