specialization

英 [,speʃəlaɪ'zeɪʃən] 美[,spɛʃəlɪ'zeʃən]

• n. 专门化；特殊化；特化作用

1. the act of specializing; making something suitable for a special purpose

2. the special line of work you have adopted as your career;

"his specialization is gastroenterology"

3. (biology) the structural adaptation of some body part for a particular function;

"cell differentiation in the developing embryo"