double major

US /ˌdʌb.əl ˈmeɪ.dʒər/
UK /ˌdʌb.əl ˈmeɪ.dʒər/
"double major" picture
1.

a student who pursues two different academic majors simultaneously, or the two fields of study themselves

:
She decided to double major in computer science and mathematics.
Many students choose to double major to broaden their career options.
1.

to pursue two different academic majors simultaneously

:
She plans to double major in economics and political science.
It can be challenging to double major, but it offers more opportunities.