/ Dictionary / Index Y Yukawa: Meaning and Definition of Find definitions for: Yu•ka•wa Pronunciation: (y-kä'wä), [key] 1907–81, Japanese physicist: Nobel prize 1949. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: yukawa (Thesaurus) yukata Yukawa meson Related Content Daily Word Quiz: philanthropy Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language