onion dome
US /ˈʌn.jən ˌdoʊm/
UK /ˈʌn.jən ˌdoʊm/

1.
soğan kubbesi
a dome whose shape resembles an onion, typically found on Russian Orthodox churches and other Eastern European buildings
:
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The church was topped with five golden onion domes.
Kilise beş altın soğan kubbesiyle taçlandırılmıştı.
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The distinctive shape of the onion dome is a hallmark of Russian architecture.
Soğan kubbesinin kendine özgü şekli Rus mimarisinin bir özelliğidir.