dome [domedomesdomeddoming] BrE [dəʊm] NAmE [doʊm] noun 1. a round roof with a ↑circular base •the dome of St Paul's Cathedral 2. a thing or a building shaped like a dome •his bald dome of a head 3. (NAmE) (in names)a sports ↑stadium whose roof is shaped like a dome •the Houston Astrodome
Word Origin: early 16th cent. (originally referring to a stately building): from Latin domus; other senses are via French dôme, from Italian duomo ‘cathedral, dome’.