n.[U]

1. （食物等的）吸收
   assimilation of new ideas

   新思想的吸收

2. 【生理】同化作用
3. （民族或語音的）同化
   The "d" in "grandpa" has been lost by assimilation to "p".

   "grandpa"中的"d"因受"p"的同化而不發音。