/ Dictionary / Index P petiole: Meaning and Definition of Find definitions for: pet•i•ole Pronunciation: (pet'ē-ōl"), [key] — n. the slender stalk by which a leaf is attached to the stem; leafstalk. See diag. under a stalk or peduncle, as that connecting the abdomen and thorax in wasps. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: petiole (Thesaurus) petiolate petiolule Related Content Daily Word Quiz: fervor Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language