/ Dictionary / Index P preanesthetic: Meaning and Definition of Find definitions for: pre•an•es•thet•ic Pronunciation: (prē-an"us-thet'ik, prē"an-), [key] — n. a substance that produces a preliminary or light anesthesia. —adj. given prior to an anesthetic that induces total insensibility. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. preamplifier preantiseptic Related Content Daily Word Quiz: simian Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language