/ Dictionary / Index C Copperheadism: Meaning and Definition of Find definitions for: Cop•per•head•ism Pronunciation: (kop'ur-hed-iz"um), [key] — n. (during the Civil War) the advocacy of peace negotiations to restore the Union to its prewar condition, with continued slavery in the South. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. copperhead copper hydroxide Related Content Daily Word Quiz: fresco Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language