名詞 rotunda:

1. a building having a circular plan and a dome
2. a large circular room

ro.tun.da

n.（名詞）
A circular building, especially one with a dome.
圓形建筑物：尤指帶圓頂?shù)膱A形建筑物

A large area with a high ceiling, as in a hotel lobby.
圓形大廳：如旅店入口處的大廳等具有很高天花板的一大片場地
A large round room.
大的圓形房間

來源：
Italian rotonda [from feminine of] rotondo [round]
意大利語 rotonda [] 源自rotondo的陰性詞 [圓的]
from Latin rotundus * see rotund
源自 拉丁語 rotundus *參見 rotund