Onion dome

/ˈʌniən dˈəʊm/

/ˈʌniən dˈoʊm/

Onion dome

a bulbous, onion-shaped dome that is often found atop a tower or a building, typically associated with Eastern European and Russian architecture

Examples

1. The onion domes of the Russian Orthodox Churches and the art there is just amazing.

2. Because of its shape, the dome is often called an onion dome.