di·ver·tic·u·li·tis (dī'vûr-tĭk'yə-lī'tĭs) n. Inflammation of a diverticulum or of diverticula in the intestinal tract, causing fecal stagnation and pain.
diverticulitis di·ver·tic·u·li·tis (dī'vûr-tĭk'yə-lī'tĭs) n. Inflammation of a diverticulum, especially of the small pockets in the wall of the colon that fill with stagnant fecal material and become inflamed.