genus Urocystis ge·nu·su·rocystis uncommon noun 1. a genus of smut fungi belonging to the family Tilletiaceae SynonymsUrocystisgenus Urocystis Related words Broader terms fungus genus Parts Tilletiaceae Part of flag smut fungus WordNet 2.1 (Princeton University). WordNet 2.1 Copyright Princeton University. All rights reserved.
