This is the 6104th most frequent Russian word.
стадионе
"Стадионе" is the prepositional case form of "стадион," meaning "stadium" in English.
The word "стадионе" is used in the prepositional case to specify the location where the activity took place.
Вчера я играл в футбол на стадионе.
Yesterday, I played football at the stadium.
Here, "стадионе" is again in the prepositional case to indicate the meeting location.
Мы встретимся на стадионе перед матчем.
We will meet at the stadium before the match.
In this sentence, "стадионе" is used to describe a location where events are conducted.