/ Dictionary / Index P petronel: Meaning and Definition of Find definitions for: pet•ro•nel Pronunciation: (pe'tru-nl), [key] — n. a firearm of large caliber, used from the 15th to the 17th century, that fired with its butt resting against the chest. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. petrology Petronius Related Content Daily Word Quiz: deleterious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language