Standard Lemma guide

atrium

noun · 9 senses · updated from the 2026-07-25 local source snapshot

Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.

Sound

Pronunciation

Each Play button uses your device's default local English voice, or a natural local fallback. The selected voice name appears after playback. This is synthesized speech, not a source recording.

  • /ˈeɪ.tɹi.əm/
  • Southern-England: Recorded audio is listed in the source snapshot.
  • CMU ARPABET: EY1 T R IY0 AH0 M Digits mark lexical stress: 1 primary, 2 secondary, 0 unstressed.

1

noun

Meaning 1

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

Definition source: English Wiktionary via Wiktextract

Topics: architecture

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

2

noun

Meaning 2

A square hall lit by daylight from above, into which rooms open at one or more levels.

Definition source: English Wiktionary via Wiktextract

Topics: architecture

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

3

noun

Meaning 3

A cavity, entrance, or passage.

Definition source: English Wiktionary via Wiktextract

Topics: anatomy, medicine, sciences

Examples

  • an atrium of the infundibula of the lungs

Meaning relationships

Synonyms: none provided

Antonyms: none provided

4

noun

Meaning 4

Any enclosed body cavity or chamber.

Definition source: English Wiktionary via Wiktextract

Topics: biology, natural-sciences

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

5

noun

Meaning 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.

Definition source: English Wiktionary via Wiktextract

Topics: anatomy, medicine, sciences

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

6

noun

Meaning 6

A microscopic air sac within a pulmonary alveolus.

Definition source: English Wiktionary via Wiktextract

Topics: anatomy, medicine, sciences

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

7

noun

Meaning 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.

Definition source: English Wiktionary via Wiktextract

Topics: biology, chemistry, microbiology, natural-sciences, palynology, physical-sciences

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

8

noun

Meaning 8

the central area in a building; open to the sky

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

Broader terms: court, courtyard

9

noun

Meaning 9

any chamber that is connected to other chambers or passageways (especially one of the two upper chambers of the heart)

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

Broader terms: chamber

Narrower terms: atrium cordis, atrium of the heart

History

Etymology

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

Across languages

Translations

91 source translations are retained for this English entry.

  • Bulgarian: а́триум (átrium) — central room in Roman homes
  • Catalan: atri — central room in Roman homes
  • Czech: atrium — central room in Roman homes
  • Danish: gårdhave — central room in Roman homes
  • Danish: atrium — central room in Roman homes
  • Finnish: atrium — central room in Roman homes
  • Hungarian: átrium — central room in Roman homes
  • Indonesian: atrium — central room in Roman homes
  • Indonesian: beranda — central room in Roman homes
  • Japanese: アトリウム (atoriumu) — central room in Roman homes
  • Korean: 아트리움 (ateurium) — central room in Roman homes
  • Latin: ātrium — central room in Roman homes
  • Macedonian: а́триум (átrium) — central room in Roman homes
  • Occitan: atri — central room in Roman homes
  • Polish: atrium — central room in Roman homes
  • Portuguese: átrio — central room in Roman homes
  • Russian: а́триум (átrium) — central room in Roman homes
  • Russian: а́трий (átrij) — central room in Roman homes
  • Serbo-Croatian: atrij — central room in Roman homes
  • Slovene: atrij — central room in Roman homes
  • Turkish: atriyum — central room in Roman homes
  • Catalan: atri — square hall lit from above
  • Chinese Mandarin: 天井 (tiānjǐng) — square hall lit from above
  • Danish: atrium — square hall lit from above
  • Finnish: atrium — square hall lit from above
  • Finnish: valopiha — square hall lit from above
  • French: atrium — square hall lit from above
  • German: Atrium — square hall lit from above
  • Greek: αίθριο (aíthrio) — square hall lit from above
  • Hungarian: átrium — square hall lit from above
  • Italian: cavedio — square hall lit from above
  • Japanese: アトリウム (atoriumu) — square hall lit from above
  • Korean: 아트리움 (ateurium) — square hall lit from above
  • Northern Kurdish: guhik — square hall lit from above
  • Latin: cavaedium — square hall lit from above
  • Macedonian: а́триум (átrium) — square hall lit from above
  • Polish: atrium — square hall lit from above
  • Portuguese: átrio — square hall lit from above
  • Romanian: atrium — square hall lit from above
  • Russian: а́триум (átrium) — square hall lit from above
  • Russian: а́трий (átrij) — square hall lit from above
  • Slovene: atrij — square hall lit from above
  • Spanish: atrio — square hall lit from above
  • Tamil: அறை (aṟai) — square hall lit from above
  • Czech: předsíň — body cavity
  • Dutch: boezem — body cavity
  • Dutch: atrium — body cavity
  • Finnish: ontelo — body cavity
  • Greek: κόλπος (kólpos) — body cavity
  • Hebrew: עלייה (aliya) — body cavity
  • Indonesian: atrium — body cavity
  • Irish: aitriam — body cavity
  • Portuguese: átrio — body cavity
  • Portuguese: aurícula — body cavity
  • Romanian: atriu — body cavity
  • Arabic: أُذَيْن (ʔuḏayn) — one of two upper chambers of the heart
  • Armenian: նախասիրտ (naxasirt) — one of two upper chambers of the heart
  • Bulgarian: ухо на предсърдието (uho na predsǎrdieto) — one of two upper chambers of the heart
  • Catalan: aurícula — one of two upper chambers of the heart
  • Chinese Mandarin: 心房 (xīnfáng) — one of two upper chambers of the heart
  • Danish: forkammer — one of two upper chambers of the heart
  • Danish: atrium — one of two upper chambers of the heart
  • Dutch: boezem — one of two upper chambers of the heart
  • Finnish: eteinen — one of two upper chambers of the heart
  • French: oreillette — one of two upper chambers of the heart
  • German: Atrium — one of two upper chambers of the heart
  • Greek: κόλπος (kólpos) — one of two upper chambers of the heart
  • Hungarian: pitvar — one of two upper chambers of the heart
  • Hungarian: szívpitvar — one of two upper chambers of the heart
  • Indonesian: atrium — one of two upper chambers of the heart
  • Indonesian: serambi jantung — one of two upper chambers of the heart
  • Japanese: 心房 (shinbō) — one of two upper chambers of the heart
  • Korean: 심방 (simbang) — one of two upper chambers of the heart
  • Northern Kurdish: guhike — one of two upper chambers of the heart
  • Northern Kurdish: guhikeya dil — one of two upper chambers of the heart
  • Malay: atrium — one of two upper chambers of the heart
  • Malay: serambi jantung — one of two upper chambers of the heart
  • Mongolian: тосгуур (tosguur) — one of two upper chambers of the heart
  • Mongolian: ᠲᠣᠰᠭᠠᠭᠤᠷ (tosɣaɣur) — one of two upper chambers of the heart
  • Polish: przedsionek — one of two upper chambers of the heart
  • Polish: atrium — one of two upper chambers of the heart
  • Portuguese: átrio — one of two upper chambers of the heart
  • Portuguese: aurícula — one of two upper chambers of the heart
  • Russian: предсе́рдие (predsérdije) — one of two upper chambers of the heart
  • Spanish: aurícula — one of two upper chambers of the heart
  • Swedish: förmak — one of two upper chambers of the heart
  • Swedish: atrium — one of two upper chambers of the heart
  • Tagalog: silid-anuran — one of two upper chambers of the heart
  • Turkish: kulakçık — one of two upper chambers of the heart
  • Ukrainian: передсе́рдя (peredsérdja) — one of two upper chambers of the heart
  • Welsh: atriwm — one of two upper chambers of the heart