/ Dictionary / Index A ampullaceous: Meaning and Definition of Find definitions for: am•pul•la•ceous Pronunciation: (am"pu-lā'shus), [key] — adj. like an ampulla; bottle-shaped. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. ampulla ampulla of Lorenzini Related Content Daily Word Quiz: censure Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language