Sul″tan (?), n. [F. sultan (cf. Sp. soldan, It. sultano, soldano), Ar. sultān sultan, dominion. Cf. Soldan.] A ruler, or sovereign, of a Mohammedan state; specifically, the ruler of the Turks; the Padishah, or Grand Seignior; — officially so called.
Sultan flower. (Bot.) See Sweet sultan, under Sweet.