| Noun | 1. | specialization - the act of specializing; making something suitable for a special purposechange of state - the act of changing something into something different in essential characteristics | |
| 2. | specialization - the special line of work you have adopted as your career; "his specialization is gastroenterology" | |
| 3. | specialization - (biology) the structural adaptation of some body part for a particular function; "cell differentiation in the developing embryo" | |