This is the 8872nd most frequent Catalan word.
estudiaven
"Estudiaven" means "they studied" or "they were studying" in English.
Here, 'estudiaven' is used in the past imperfect tense to indicate a habitual action that occurred in the past.
Els alumnes estudiaven cada vespre a la biblioteca.
The students studied every evening at the library.
In this sentence, 'estudiaven' describes an ongoing action in the past within a specific context—what the speaker remembers from their youth.
Quan jo era petit, els meus germans estudiaven matemàtiques a casa.
When I was young, my brothers studied mathematics at home.
Here, 'estudiaven' is used to indicate an action carried out continuously in the past with a specific purpose in this context.