/ Dictionary / Index P presumption of innocence: Meaning and Definition of Find definitions for: presump'tion of in'nocence Pronunciation: [key] — Law. Law. the rebuttable presumption of the innocence of the defendant in a criminal action in Anglo-Saxon jurisprudence, placing upon the prosecution the burden of proof of the defendant's guilt. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. presumption of fact presumption of law Related Content Daily Word Quiz: gregarious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language