Atrium may refer to:

Anatomy

Atrium (heart) The atrium ( la, ātrium, , entry hall) is one of two upper chambers in the heart that receives blood from the circulatory system. The blood in the atria is pumped into the heart ventricles through the atrioventricular valves. There are two ...

, an anatomical structure of the heart * Atrium, the genital structure next to the genital aperture in the

reproductive system of gastropods The reproductive system of gastropods ( slugs and snails) varies greatly from one group to another within this very large and diverse taxonomic class of animals. Their reproductive strategies also vary greatly, see Mating of gastropods. In man ...

* Atrium of the

ventricular system The ventricular system is a set of four interconnected cavities known as cerebral ventricles in the brain. Within each ventricle is a region of choroid plexus which produces the circulating cerebrospinal fluid (CSF). The ventricular system is c ...

of the brain * Pulmonary alveolus (also known as atrium alveolus), microscopic air sac in the lungs

Buildings

Atrium (architecture) In architecture, an atrium (plural: atria or atriums) is a large open-air or skylight-covered space surrounded by a building. Atria were a common feature in Ancient Roman dwellings, providing light and ventilation to the interior. Modern atria, ...

, an open space within a building, either open to the sky or featuring a glass roof *

Amot Atrium Tower Amot Atrium Tower ( he, מגדל אמות אטריום) is an office tower on Jabotinsky Street near the Diamond Exchange District in the Tel Aviv District city of Ramat Gan, Israel. It is a 40 story tower and 158 meters tall. The tower’s con ...

, a tower in Ramat Gan, Israel *

Atrium, Cardiff Atrium (styled as ATRiuM), officially ''ATRiuM: Cardiff Faculty of Creative and Cultural Industries'' and also known as ATRiuM Building, forms part of the Cardiff campus of the University of South Wales, along with Atlantic House in Tyndall Stre ...

, a University of South Wales building in Cardiff *

Atrium Building The Atrium Building (Edificio Atrium) is a skyscraper in Guatemala City, Guatemala Guatemala ( ; ), officially the Republic of Guatemala ( es, República de Guatemala, links=no), is a country in Central America. It is bordered to the north ...

, a skyscraper in Guatemala City *

Atrium Casino Atrium Casino is the name of the casino at Dax in the south-west of France. It is listed under the relevant legislation as an historical building. Origins In 1925 the local mayor, Eugène Milliès-Lacroix, proposed the construction of a c ...

, a casino in Dax, France *

Atrium Cinemas Atrium Cinemas is a movie theater A movie theater (American English), cinema (British English), or cinema hall ( Indian English), also known as a movie house, picture house, the movies, the pictures, picture theater, the silver screen, th ...

, a movie theatre in Karachi, Pakistan *

Winter Garden Atrium The Winter Garden Atrium is a 120-foot (36.6 m) tall 10-story glass- vaulted pavilion on Vesey Street in New York City's Brookfield Place (formerly World Financial Center) office complex. Designed by Diana Balmori, the Atrium was originally c ...

, a Brookfield Properties building in the World Financial Center of the World Trade Center, New York City *

Atrium on Bay Atrium (formally known as "Atrium on Bay") is a large retail and office complex in Toronto, Ontario, Canada. Atrium is located adjacent to Yonge-Dundas Square, and was built upon the former site of the former Ford Hotel Toronto, on the north s ...

, a retail and office complex in Toronto, Canada

Companies

Atrium Health Atrium Health, formerly Carolinas HealthCare System, is a hospital network with more than 70,000 employees and part of Advocate Aurora Health. It operates 40 hospitals, 7 freestanding emergency departments, over 30 urgent care centers, and more t ...

, based in Charlotte, North Carolina

Anatomy

Buildings

Companies

See also