- 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.
- 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.
An atrium in a townhouse.
nounpl. atria or atriums
- 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 of atriumClassical Latin
nounpl. 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 of atriumLatin ātrium; see āter- in Indo-European roots.
(plural atria or atriums)
- (architecture) A central room or space in ancient Roman homes, open to the sky in the middle; a similar space in other buildings.
- (architecture) A square hall lit by daylight from above, into which rooms open at one or more levels.
- (anatomy) Any enclosed sexine and nexine layers, widening toward the interior of the grain.