(Alternate spelling: specialisation).
1. The act of specializing; making something suitable for a special purpose; SYN. specialisation.
2. The special line of work one has adopted as one's career; SYN. specialisation, specialty, speciality, specialism.
3. The structural adaptation of some body part for a particular function; SYN. specialisation, differentiation.
In economics, a method of organizing production where economic units such as households or nations are not self-sufficient but concentrate on producing certain goods and services and trading the surplus with others. Specialization of workers is known as the division of labor.