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Meaning of assimilationism

as•sim•i•la•tion•ism

Pronunciation: (u-sim"u-lā'shu-niz"um), [key]
— n.
  1. the practice or policy of assimilating or encouraging the assimilation of people from all races and cultures: The family at first resisted the assimilationism of the New World.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.