assimilationism

From assimilation +‎ -ism.

assimilationism (uncountable)

1. (sociology) The policy or practice of the assimilation of immigrant or other minority cultures into a mainstream culture.
   • 2002, Colin Jones, The Great Nation, Penguin, published 2003, page 558:

     The model of regenerative assimilationism which the Revolutionaries displayed towards the Jews was evident in regard to other groupings whose commitment to the patriotic cause was for whatever reason in doubt.

• assimilationist