rare. [f. next + -ATION.] The action of making, or fact of becoming, cosmopolitan.
1865. Detroit Free Press, 4 June, 2/2. The development of individual peoples has grown into one great wholeinto a cosmopolitanization of all mankind.
1889. Cornhill Mag., Oct., 427. Symptoms of this dead-level cosmopolitanisation of the worlds fora.