atrium

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atrium

  • /ˈeɪ.tɹi.əm/

Where it comes from

From Latin ātrium (“entry hall”), from Etruscan.

noun atria · atriums

  1. A central room or space in ancient Roman homes, open to the sky in the middle; a similar space in other buildings.

    Similar: cavaedium

  2. A square hall lit by daylight from above, into which rooms open at one or more levels.
  3. A cavity, entrance, or passage. an atrium of the infundibula of the lungs
  4. Any enclosed body cavity or chamber.
  5. An upper chamber of the heart that receives blood from the veins and forces it into a ventricle. In higher vertebrates, the right atrium receives blood from the superior vena cava and inferior vena cava, and the left atrium receives blood from the left and right pulmonary veins.
  6. A microscopic air sac within a pulmonary alveolus.
  7. A cavity inside a porate aperture of a pollen grain formed by the separation of the sexine and nexine layers, widening toward the interior of the grain. Nexine 0.5μ thick, separating from the sexine about 5μ from the pore and forming a deep, well-defined atrium.

Thesaurus

Closest in meaning: basement, court, hall, cellar, cave, concourse, plaza, earpiece, headset, square, cava, heart, foyer, lobby, anteroom, vestibule

Translations

Every language

noun central room in Roman homes

한국어아트리움 ateurium
日本語アトリウム atoriumu
Portuguêsátrio
Русскийа́триум átrium, а́трий átrij

noun square hall lit from above

Españolatrio
한국어아트리움 ateurium
日本語アトリウム atoriumu
中文天井 tiānjǐng
Portuguêsátrio
Françaisatrium
DeutschAtrium
Italianocavedio
Ελληνικάαίθριο aíthrio
Românăatrium
Русскийа́триум átrium, а́трий átrij

noun body cavity

Portuguêsátrio, aurícula
Ελληνικάκόλπος kólpos
Românăatriu
עבריתעלייה aliya

noun one of two upper chambers of the heart

Españolaurícula
한국어심방 simbang
日本語心房 shinbō
中文心房 xīnfáng
Portuguêsátrio, aurícula
Françaisoreillette
DeutschAtrium
Ελληνικάκόλπος kólpos
Русскийпредсе́рдие predsérdije
العربيةأُذَيْن ʔuḏayn

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MLA

"atrium." Wiktionary, via Micwyn, micwyn.com/word/atrium. Accessed 6 Nov. 2026.

APA

atrium. (n.d.). In Wiktionary, via Micwyn. Retrieved November 6, 2026, from https://micwyn.com/word/atrium

Chicago

"atrium." Wiktionary, via Micwyn. Accessed November 6, 2026. https://micwyn.com/word/atrium.

BibTeX
@misc{atrium_2026,
  title = {atrium},
  howpublished = {Wiktionary, via Micwyn},
  year = {2026},
  url = {https://micwyn.com/word/atrium},
  urldate = {2026-11-06}
}