/ Dictionary / Index R res judicata: Meaning and Definition of Find definitions for: res ju•di•ca•ta Pronunciation: (rēz' j"di-kā'tu, rās'), [key] — Law. Law. a thing adjudicated; a case that has been decided. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. resist printing reskin Related Content Daily Word Quiz: vertigo Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language