Definitions

from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. A circular building, especially one with a dome.
  • n. A large area with a high ceiling, as in a hotel lobby.
  • n. A large round room.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. a round building, usually small, often with a dome

from the GNU version of the Collaborative International Dictionary of English

  • n. A round building; especially, one that is round both on the outside and inside, like the Pantheon at Rome. Less properly, but very commonly, used for a large round room.

from The Century Dictionary and Cyclopedia

  • n. A round building, especially one with a dome; any building that is round both outside and inside. The most celebrated edifice of this kind is the Pantheon at Rome. See cuts under octastyle and pantheon.
  • n. A circular hall in a large building, generally surmounted by a dome: as, the rotunda of the Capitol in Washington.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • n. a large circular room
  • n. a building having a circular plan and a dome

Etymologies

Italian rotonda, from feminine of rotondo, round, from Latin rotundus; see rotund.
(American Heritage® Dictionary of the English Language, Fourth Edition)

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