Simple Definition of atrium
: an open area inside a tall building that has windows to let light in from above
: one of two sections of the heart that take in blood from the veins
Full Definition of atriumplural
atriaplay \-trē-ə\ also
1 : the central room of a Roman house
2 plural usually atriums a : a rectangular open patio around which a house is built b : a many-storied court in a building (as a hotel) usually with a skylight
3 [New Latin, from Latin] : an anatomical cavity or passage; especially : the chamber or either of the chambers of the heart that receives blood from the veins and forces it into the ventricle or ventricles — see heart illustration
atrialplay \-trē-əl\ adjective
Did You Know?
In an ancient Roman house, an atrium was an open central court that contained the impluvium, a basin where rainwater collected. It originally contained the hearth and functioned as the center of family life. The term later came to be used for the open front courtyard of a Christian basilica, where congregants collected before services. The atrium was revived in the 20th century in the form of glass-covered, greenery-filled multistory spaces sometimes found in shopping centers, office buildings, and large hotels.
Origin and Etymology of atrium
First Known Use: 1577
ATRIUM Defined for Kids
Definition of atrium for Students
: the part of the heart that receives blood from the veins
Seen and Heard
What made you want to look up atrium? Please tell us where you read or heard it (including the quote, if possible).