genus Cymbidium ge·nus·cym·bidium uncommon noun 1. genus of tropical epiphytic or terrestrial Old World orchids; one of the most popular orchid genera Synonymsgenus Cymbidium Related words Broader terms monocot genus Parts Orchidaceae Part of cymbid WordNet 2.1 (Princeton University). WordNet 2.1 Copyright Princeton University. All rights reserved.