ˌkɒnd͡ʒəˈɡeɪʃən ˌkɑnd͡ʒəˈɡeɪʃən ˈjuːn.jən the act of making or becoming a single unit the union of opposing factions he looked forward to the unification of his family for the holidays (law) an estate secured to a prospective wife as a marriage settlement in lieu of a dower