rotunda

ro·tun·da  (r-tnd)

n.

1. A circular building, especially one with a dome.

2.

a. A large area with a high ceiling, as in a hotel lobby.

b. A large round room.

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[Italian rotonda, from feminine of rotondo, round, from Latin rotundus; see rotund.]

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rotunda

Noun

a circular building or room, esp. with a dome [Italian rotonda]

Thesaurus

Noun	1.	rotunda - a building having a circular plan and a dome building, edifice - a structure that has a roof and walls and stands more or less permanently in one place; "there was a three-story building on the corner"; "it was an imposing edifice"
	2.	rotunda - a large circular room room - an area within a building enclosed by walls and floor and ceiling; "the rooms were very small but they had a nice view"