pääaineina
Pääaineina is a Finnish word that translates to "as majors" or "in the main subjects" in English. It is commonly used in the context of higher education, particularly at universities and universities of applied sciences in Finland. When a student is said to be studying "pääaineina" certain subjects, it means those are their primary fields of study, the core of their degree program.
In the Finnish higher education system, students typically declare one or two pääaineet, which are the subjects