Main Entry: proc·tol·o·gy

Pronunciation: \präk-ˈtä-lə-jē\

Function: noun

Etymology: Greek prōktos + English -logy

Date: 1899

: a branch of medicine dealing with the structure and diseases of the anus, rectum, and sigmoid colon

— proc·to·log·ic \ˌpräk-tə-ˈlä-jik\ or proc·to·log·i·cal \-ji-kəl\ adjective

— proc·tol·o·gist \präk-ˈtä-lə-jist\ noun