uniting
     n 1: the combination of two or more commercial companies [syn: {amalgamation},
           {merger}]
     2: 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" [syn: {union}, {unification},
         {conjugation}, {jointure}] [ant: {disunion}]
Source: WordNet® 2.0