Open English Wordnet
Nouns
(n)specialization, specialisationthe act of specializing; making something suitable for a special purpose
(n)specialization, specialisation, specialty, speciality, specialismthe special line of work you have adopted as your career“his specialization is gastroenterology”
(n)specialization, specialisation, differentiation(biology) the structural adaptation of some body part for a particular function“cell differentiation in the developing embryo”