assimilation/əˌsɪməˈleɪʃn; əˌsɪml`eʃən/ n[U]1 process of assimilating or being assimilated （被）吸收或同化的过程.2 (phonetics 语音) change in a speech sound when it becomes similar to another speech sound next to it 同化（一个语音受相邻语音影响而产生与之相同或相似的变化）.
牛津英汉双解词典