Source : Webster's Revised Unabridged Dictionary (1913)

Nationalization \Na`tion*al*i*za"tion\, n.
   The act of nationalizing, or the state of being nationalized.

Source : WordNet®

nationalization
     n 1: the action of forming or becoming a nation [syn: {nationalisation}]
     2: the action of rendering national in character [syn: {nationalisation}]
     3: changing something from private to state ownership or
        control [syn: {nationalisation}, {communization}, {communisation}]
        [ant: {denationalization}]