atrium Hear it!

atrium definition

atri·um (ā′trē əm)

noun pl. atria a′tria (-ə) or atriums a′tri·ums

  1. the central court or main room of an ancient Roman house
  2. a hall or court at the center or entrance of a building, usually rising through more than one story or all the stories and having a skylight or glass on one side and the roof
  3. Anat. a chamber or cavity, esp. either of the thin-walled upper chambers of the heart that receive blood; auricle

Etymology: L

Related Forms:

  • atrial a′tri·al (-əl) adjective

Webster's New World College Dictionary Copyright © 2009 by Wiley Publishing, Inc., Cleveland, Ohio.
Used by arrangement with John Wiley & Sons, Inc.

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