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English definition of “assimilation”

assimilation

noun [U] (INTO GROUP)    /əˌsɪm.ɪˈleɪ.ʃən/
the process of becoming a part, or making someone become a part, of a group, country, society, etc.: The assimilation of ethnic Germans in the US was accelerated by the two world wars.
(Definition of assimilation noun (INTO GROUP) from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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