/ Dictionary / Index S stipule: Meaning and Definition of Find definitions for: stip•ule Pronunciation: (stip'yl), [key] — n. Bot. one of a pair of lateral appendages, often leaflike, at the base of a leaf petiole in many plants. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: stipule (Thesaurus) stipulation stipuliform Related Content Daily Word Quiz: endear Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language