This is the 2271st most frequent Polish word.
studiował
"Studiował" means "he studied" in English.
Here, 'studiował' is used to indicate the action of studying a specific subject in the past tense.
John studiował medycynę na uniwersytecie.
John studied medicine at the university.
In this sentence, 'studiował' conveys a repeated or habitual activity in the past tense.
Kiedyś studiował filozofię, ale zmienił kierunek na prawo.
He used to study philosophy, but he switched to law.
The word 'studiował' is used here to describe a continuing or prolonged activity in the past tense.