leg·a·tine \ˈlegəˌtēn, -ˌtīn, -_tə̇n\adjective Etymology: Medieval Latin legatinus, from Latin legatus legate + -inus -ine : of, headed by, or enacted under the authority of a legate < the pope would send a legatine commission to England — F.M.Stenton > < a legatine constitution >