encapsulation

详细解释:【计】 封闭, 封装, 密封, 灌封, 装箧
【化】 封铸; 包胶; 封入胶内; 胶囊化
【医】 包围

英语解释：

名词 encapsulation:

the condition of being enclosed (as in a capsule)the process of enclosing (as in a capsule)