Gender Masculine Usage Arabic Scripts جلال الدين(Arabic) Pronounced Pron. /d͡ʒa.laː.lud.ˈdiːn/ Meaning & History Means "greatness of the faith" from Arabic جلال (jalal) meaning "greatness, splendour" and دين (din) meaning "religion, faith". Jalal ad-Din Muhammad Rumi, commonly called just Rumi, was a 13th-century Persian poet.