- Atrium is defined as a patio, rectangular in shape and open to the elements, attached to a house or is a courtyard, usually located in the center of a building with several floors, and typically has a skylight at the very top.
- An example of an atrium is the outdoor patio located off the kitchen of a house and accessed through sliding glass doors.
- An example of an atrium is an area of benches and plants located in the center of a multi-leveled shopping mall with a skylight at the top.
- The definition of an atrium is a body cavity, specifically relating to the heart’s chambers which take in blood.
When a person has open-heart surgery to repair a blockage in an artery which gives blood to the heart, it is an example of surgery on their atrium.
An atrium in a townhouse.Licensed from iStockPhoto
- the central court or main room of an ancient Roman house
- 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
- Anat. a chamber or cavity, esp. either of the thin-walled upper chambers of the heart that receive blood; auricle
Origin: Classical Latin
- atrial adjective
Used by arrangement with John Wiley & Sons, Inc.
noun pl. a·tri·a or a·tri·ums
- Architecture A rectangular court, as:a. A usually skylighted central area, often containing plants, in some modern buildings, especially of a public or commercial nature.b. The open area in the center of an ancient Roman house.c. The forecourt of a building, such as an early Christian church, enclosed on three or four sides with porticoes.
- Anatomy A body cavity or chamber, especially either of the upper chambers of the heart that receives blood from the veins and forces it into a ventricle. Also called auricle.
Origin: Latin ātrium; see āter- in Indo-European roots.
atrium - Medical Definition
noun pl. a·tri·ums or a·tri·a
- A chamber or cavity to which several chambers or passageways are connected.
- Either the right or the left upper chamber of the heart that receives blood from the veins and forces it into a ventricle.
- That part of the tympanic cavity that lies below the eardrum.
- A subdivision of the alveolar duct in the lung from which the alveolar sacs open.
atrium - Science Definition
Plural atria atria or atriums
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