also: スタディアム
noun
A large sports or event venue with tiered seating. Used for modern stadiums, not ancient Greek stadia.
新しいスタジアムでサッカーの試合を見た。
I watched a soccer match at the new stadium.
そのスタジアムは5万人収容できる。
That stadium can hold 50,000 people.
Borrowed from English 'stadium', ultimately from Latin 'stadium', from Greek 'stadion'.