Endomycetales en·do·my·cetales uncommon noun 1. fungi having a zygote or a single cell developing directly into an ascus Synonymsorder Endomycetales Related words Broader terms fungus order Parts Hemiascomycetes Part of SaccharomycetaceaeyeastSchizosaccharomycetaceae WordNet 2.1 (Princeton University). WordNet 2.1 Copyright Princeton University. All rights reserved.