As a Noun: 1. DIVERTICULITIS is a colon disease. It happens when pouches on the colon become inflamed or infected. Note: 1. There appears to be no commonly used Auslan sign for DIVERTICULITIS. If you know a sign for DIVERTICULITIS used by you or other Auslan users (deaf people or interpreters) please go to "missing sign feedback" and supply details. Thank you.