Specialize  v. (also -ise) (-zing or -sing) 1 (often foll. By in) a be or become a specialist. B devote oneself to an interest, skill, etc. (specializes in insulting people). 2 (esp. In passive) adapt for a particular purpose (specialized organs). 3 (as specialized adj.) Of a specialist (specialized work).  specialization n. [french: related to *special]