Duomo cathedral church

Duomo is a generic Italian term for a cathedral church. The formal word for a church that is presently a cathedral is cattedrale; a Duomo may be either a present or a former cathedral (the latter always in a town that no longer has a bishop nor therefore a cathedral, as for example Trevi). Such churches are usually referred to simply as "Il Duomo" or "The Duomo", without regard to the full proper name of the church.

According to the Oxford English Dictionary, the word duomo derives from the Latin word "domus", meaning house, as a cathedral is the "house of God", or domus Dei.