/ Dictionary / Index D Delbrück: Meaning and Definition of Find definitions for: Del•brück Pronunciation: (del'brook Ger. del'bryk), [key] 1906–81, U.S. biologist, born in Germany: Nobel prize for medicine 1969. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: delbruck (Thesaurus) Delbert Delcassé Related Content Daily Word Quiz: spectral Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language