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(dÄ«'vÃ»r-tÄ­k'yÉ-lÉm) Plural diverticula. A pouch or sac branching out from a portion of the gastrointestinal tract, especially the large intestine. A diverticulum can occur as a normal structure, or it can be caused by a hernia.
Diverticulosis is defined by the presence of multiple pouches (diverticula) in the colon. In people without symptoms, these are usually found incidentally during other investigations. [citation needed]