opiskeluessaan
Opiskeluessaan is a Finnish word that translates to "while studying" or "in his/her/their studies" in English. It is a verbal noun, specifically a temporal adverbial form of the verb opiskella, which means to study. The "-ssaan" ending indicates possession, implying that the studying is being done by someone whose identity is understood from the context. This grammatical form is commonly used to describe actions or events that occur concurrently with the act of studying.
For example, one might say "Hän löysi uuden harrastuksen opiskeluessaan" which translates to "He/She found a