/ Dictionary / Index W Weizsäcker: Meaning and Definition of Find definitions for: Weiz•säck•er Pronunciation: (vīts'zek"ur), [key] born 1912, German physicist and cosmologist. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Weizmann wejack Related Content Daily Word Quiz: eureka Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language