noun, noun or participle which takes 'suru', transitive verb
specialization; major; specialized study
Refers to concentrating on a particular field of study, often in university or professional training. Can be used as a noun or with する to mean 'to specialize in'.
大学では経済学を専修しています。
I am majoring in economics at university.
He went on to graduate school to specialize in Japanese literature.