[uh-sim-uh-ley-shuh-niz-uh m]
  1. the practice or policy of assimilating or encouraging the assimilation of people from all ethnic groups and cultures of origin: In the 1900s, some immigrants at first resisted the assimilationism of the New World.

Origin of assimilationism

First recorded in 1950–55; assimilation + -ism
Related formsas·sim·i·la·tion·ist, noun, adjective Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for assimilationist

Contemporary Examples of assimilationist

Historical Examples of assimilationist

Word Origin and History for assimilationist

"one who advocates racial or ethnic integration," 1900, in reference to possible U.S. attitudes toward Hawaii and possessions obtained in the war against Spain; usually with reference to Jews in European nations; see assimilation + -ist.

Online Etymology Dictionary, © 2010 Douglas Harper