/ Dictionary / Index M Massena: Meaning and Definition of Find definitions for: Mas•se•na Pronunciation: (mu-sē'nu), [key] — n. a city in N New York, on the St. Lawrence River. 12,851. Mas•sé•na Pronunciation: (ma-sā-na'), [key] — n. and1758–1817, French marshal under Napoleon I. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. massé mass-energy equation Related Content Daily Word Quiz: soporific Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language