Definition of atrium
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 builtb : a many-storied court in a building (such 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: 1577See Words from the same year
ATRIUM Defined for English Language Learners
Definition of atrium for English Language Learners
: 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
ATRIUM Defined for Kids
Definition of atrium for Students
: the part of the heart that receives blood from the veins
Seen and Heard
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