deVries dev·ries US/dɪˈvris/ uncommon noun 1. Dutch botanist who rediscovered Mendel''s laws and developed the mutation theory of evolution (1848-1935) SynonymsDe VriesHugo deVriesHugo De Vries Related words Broader terms botanist WordNet 2.1 (Princeton University). CMU Pronouncing Dictionary. WordNet 2.1 Copyright Princeton University. All rights reserved.