/ Dictionary / Index P presurmise: Meaning and Definition of Find definitions for: pre•sur•mise Pronunciation: (n.prē"sur-mīz', prē-sûr'mīzv.prē"sur-mīz'), [key] — n., v., -mised, -mis•ing. —n. a surmise previously formed. —v.t. to surmise beforehand. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. presuppurative presynaptic Related Content Daily Word Quiz: perspicacious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language