/ Dictionary / Index S Second Empire: Meaning and Definition of Find definitions for: Sec'ond Em'pire Pronunciation: [key] the empire established in France (1852–70) by Louis Napoleon: the successor to the Second Republic. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. seconde second estate Related Content Daily Word Quiz: acerbity Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language