/ Dictionary / Index C Constitutional Union party: Meaning and Definition of Find definitions for: Constitu'tional Un'ion par"ty Pronunciation: [key] — U.S. Hist. U.S. Hist. the political party formed in 1859 chiefly by former Whigs to rally moderates desirous of preserving the Union. In 1860 it nominated John Bell for president and Edward Everett for vice president. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. constitutional monarchy Constitution clock Related Content Daily Word Quiz: eccentric Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language