/ Dictionary / Index P poisoning: Meaning and Definition of Find definitions for: poi•son•ing Pronunciation: (poi'zu-ning), [key] — n. Pathol. the condition produced by a poison or by a toxic substance. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: poisoning (Thesaurus) poison hemlock poison ivy Related Content Daily Word Quiz: cygnet Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language