Webster’s Revised Unabridged Dictionary · 1913 Curcuma Cur′cu·ma (k?r′k?-m?), n. [Cf. F., It., & Sp. curcuma; all fr. Ar. kurkum. Cf. Turmeric.] (Bot.) A genus of plants of the order Scitamineæ, including the turmeric plant (Curcuma longa). Curcuma paper. (Chem.) See Turmeric paper, under Turmeric. ‹ Curculionidous Curcumin ›