/ Dictionary / Index P pinnulate: Meaning and Definition of Find definitions for: pin•nu•late Pronunciation: (pin'yu-lāt"), [key] — adj. having pinnules. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. pinnula pinnule Related Content Daily Word Quiz: secular Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language