Kosteletzya kos·te·let·zya uncommon noun 1. small genus of herbs of southeastern United States and tropical America and Africa Synonymsgenus Kosteletzya Related words Word family Kosteletzya virginica Broader terms dilleniid dicot genus Parts Malvaceae Part of seashore mallow WordNet 2.1 (Princeton University). WordNet 2.1 Copyright Princeton University. All rights reserved.