atrium

play
noun atri·um \ˈā-trē-əm\

Definition of atrium

plural

atria

play \-trē-ə\ also

atriums

  1. 1 :  the central room of a Roman house

  2. 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. 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

atrial

play \-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

Latin


First Known Use: 1577


ATRIUM Defined for English Language Learners

atrium

play
noun atri·um \ˈā-trē-əm\

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

atrium

play
noun atri·um \ˈā-trē-əm\

Definition of atrium for Students

  1. :  the part of the heart that receives blood from the veins


Medical Dictionary

atrium

play
noun atri·um \ˈā-trē-əm\

Medical Definition of atrium

plural

atria

\-trē-ə\play also

atriums

  1. :  an anatomical cavity or passage; especially :  a chamber of the heart that receives blood from the veins and forces it into a ventricle or ventricles



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