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From The Collaborative International Dictionary of English v.0.48:
nationalize \na"tion*al*ize\, v. t. [imp. & p. p. Nationalized; p. pr. & vb. n. Nationalizing.] [Cf. F. nationaliser.] 1. To make national; to make a nation of; to endow with the character and habits of a nation, or the peculiar sentiments and attachment of citizens of a nation. [1913 Webster] 2. To change ownership of (a business, a property) from private ownership to state ownership or control; as, to nationalize the steel industry. [PJC]