Understanding terminology that describes Near Eastern architecture - AP Art History

An onion dome is a dome on top of a drum which is bulbous and larger than the structure it sits on, and comes to a point with a cross on it. Onion domes are the chief feature in Russian church architecture, adorning cathedrals in Russian Orthodox cultures. Onion domes are featured prominently in St. Basil's Cathedral in Moscow and are a symbol of Russian culture.