rotunda
noun /rəʊˈtʌndə/
/rəʊˈtʌndə/
- enlarge imagea round building or hall, especially one with a curved roof (= a dome)Topics Buildingsc2Word Originearly 17th cent.: alteration of Italian rotonda (camera) ‘round (chamber)’, feminine of rotondo ‘round’, from Latin rotundus, from rotare ‘rotate’.