1. (noun)assimilation the state of being assimilated; people of different backgrounds come to see themselves as part of a larger national family Synonyms: acculturation, absorption
2. (noun)assimilation, absorption the social process of absorbing one cultural group into harmony with another Synonyms: preoccupancy, assimilation, concentration, engrossment, absorption, acculturation, preoccupation, immersion, soaking up