Meaning of “assimilation” in the English Dictionary

"assimilation" in British English

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assimilationnoun [ U ]

uk /əˌsɪm.ɪˈleɪ.ʃən/ us /əˌsɪm.əˈleɪ.ʃən/

assimilation noun [ U ] (INTO GROUP)

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.

assimilation noun [ U ] (INTO ORGANISM)

the process of absorbing food into the tissue of a living organism:

Poor assimilation of vitamins and nutrients can cause health problems.

assimilation noun [ U ] (OF SOUNDS)

specialized phonetics the fact of a speech sound being influenced by the sound that comes before or after it

(Definition of “assimilation” from the Cambridge Advanced Learner’s Dictionary & Thesaurus © Cambridge University Press)

"assimilation" in American English

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assimilationnoun [ U ]

us /əˌsɪm·əˈleɪ·ʃən/

the process of becoming similar to others by taking in and using their customs and culture:

The assimilation of immigrants into American culture has been a constant feature of US history.

(Definition of “assimilation” from the Cambridge Academic Content Dictionary © Cambridge University Press)