/ Dictionary / Index P presumption of survivorship: Meaning and Definition of Find definitions for: presump'tion of survi'vorship Pronunciation: [key] — Law. Law. a presumption that one of two or more related persons was the last to die in a common disaster, made so that the estates may be settled and the final heirs determined. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. presumption of law presumptive 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