Entry 1 sense Webster, 1913 Curcuma /(k?r"k?-m?)/ · Cur·cu·ma · IPA 01 n. A genus of plants of the order Scitamineæ, including the turmeric plant (Curcuma longa). 1. A genus of plants of the order Scitamineæ, including the turmeric plant (Curcuma longa).(Bot.) Phrases & compounds Curcuma paper — See Turmeric paper, under Turmeric.