/ Dictionary / Index P preoperative: Meaning and Definition of Find definitions for: pre•op•er•a•tive Pronunciation: (prē-op'ur-u-tiv, -u-rā"tiv, -op'ru-tiv), [key] — adj. occurring or related to the period or preparations before a surgical operation. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: preoperative (Thesaurus) preop preoral 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