major in

listen to the pronunciation of major in
الإنجليزية - التركية
Bir konuda akademik olarak uzmanlaşmak
الإنجليزية - الإنجليزية
To take (something) as one's major field of study in an institute of tertiary education (such as a college or university)

John majored in Computer Science, while Jane majored in Art.

Specialize in (a subject) at college or university