diverticulum
medical or biological term for an outpouching of a hollow (or a fluid-filled) structure in the body
en-US/ˌdaɪvɚˈtɪkjələm/
en-GB/daɪvɜːtɪkjʊləm/
medical or biological term for an outpouching of a hollow (or a fluid-filled) structure in the body