/ Dictionary / Index D De Vries: Meaning and Definition of Find definitions for: De Vries Pronunciation: (du vrēs' Du. du vrēs'), [key] 1848–1935, Dutch botanist and student of organic heredity: developed the concept of mutation as a factor in the process of evolution. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: devries (Thesaurus) devout dew Related Content Daily Word Quiz: digression Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language