diverticul/o is the combining form that refers to “diverticulum (plural: diverticula)” .
Your digestive system can develop small, bulging pouches known as diverticula. A majority of these tumors are found in the lower part of the large intestine (colon). A diverticulum usually forms when the weak spots in your colon give way due to pressure. As a result, small pouches protrude through the colon wall.