Main Entry: ret·ro·gnath·ism Pronunciation: "re-trO-'nath-"iz-&m Function: noun : a condition characterized by recession of one orboth of the jaws retrognathism>
retrognathism ret·ro·gnath·ism (rě't'rō-nāth'ĭz'əm) n. A condition of facial disharmony in which one or both jaws are posterior to their normal positions.