[UK and ANZ] usually -ise [verb] [I]She's hired a lawyer who specializes in (= limits her studying or work to) divorce cases.We went to a restaurant that specializes in Italian food.The shop specializes in (selling) antique furniture.I enjoy working in general medicine, but I hope to be able to specialize (= limit my studying or work to one particular subject) in the future.
SPECIALIZE
Meaning of SPECIALIZE in English
Cambridge English vocab. Кембриджский английский словарь. 2012