atrium

noun
atri·​um | \ ˈā-trē-əm How to pronounce atrium (audio) \
plural atria\ ˈā-​trē-​ə How to pronounce atria (audio) \ also atriums

Definition of atrium

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 (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

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Other Words from atrium

atrial \ ˈā-​trē-​əl How to pronounce atrial (audio) \ 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.

Examples of atrium in a Sentence

Recent Examples on the Web

It was built from 1983 to 1985, and the entire campus is 18 acres and includes a cafeteria and atrium. Anchorage Daily News, "BP is leaving Alaska. So what’s going to happen to its big office building in Midtown Anchorage?," 6 Sep. 2019 Instead, their desks ring the top floor of a three-story atrium in one of the buildings. Mary Schlangensteinbloomberg, Los Angeles Times, "American Airlines keeps canceling flights and its CEO is taking the heat," 4 Sep. 2019 Arrayed on the granite floor in the center of the atrium is a circle of 14 black, rectangular loudspeakers that stand about 4 feet high. Steven Litt, cleveland.com, "Emeka Ogboh installation fills CMA atrium with sound of Nigeria and timely message of diversity," 11 Aug. 2019 The addition, designed by Ennead Architects and clocking in at 40,000 square feet, includes a new 15,000-square-foot gallery space, atrium, and garden. Nora Mcgreevy, BostonGlobe.com, "PEM expansion to open in September," 12 July 2019 While it hasn't been tested on humans yet, the hydrogel adhesive has done phenomenally well in testing on pig hearts, which share many similarities with human hearts, like two atriums and two ventricles. David Grossman, Popular Mechanics, "New Bio Glue Stops Post-Traumatic Bleeding in Its Tracks," 14 May 2019 Your heart has four chambers, two atria and two ventricles. John Timmer, Ars Technica, "What is atrial fibrillation, and why is your watch telling you about it?," 26 Sep. 2018 Take a seat by the gas fire, or tilt your head back to get a glimpse of the soaring atrium—and other guests who might be looking down from above. Elise Craig, Condé Nast Traveler, "25 Best Hotels in San Francisco," 28 Feb. 2018 Public health officials also traced the Legionella bacteria to a decorative fountain in the atrium. Ryan Prior, CNN, "Sheraton Atlanta hotel cleared to reopen after outbreak of Legionnaires' disease," 16 Aug. 2019

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'atrium.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of atrium

1577, in the meaning defined at sense 1

History and Etymology for atrium

Latin

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Statistics for atrium

Last Updated

23 Sep 2019

Look-up Popularity

Time Traveler for atrium

The first known use of atrium was in 1577

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More Definitions for atrium

atrium

noun

English Language Learners Definition of atrium

: an open area inside a tall building that has windows to let light in from above
technical : one of two sections of the heart that take in blood from the veins

atrium

noun
atri·​um | \ ˈā-trē-əm How to pronounce atrium (audio) \

Kids Definition of atrium

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

atrium

noun
atri·​um | \ ˈā-trē-əm How to pronounce atrium (audio) \
plural atria\ -​trē-​ə How to pronounce atria (audio) \ also atriums

Medical Definition of atrium

: 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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More from Merriam-Webster on atrium

Spanish Central: Translation of atrium

Nglish: Translation of atrium for Spanish Speakers

Britannica English: Translation of atrium for Arabic Speakers

Britannica.com: Encyclopedia article about atrium

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