atrium
Definition from Wiktionary, the free dictionary
Contents |
[edit] English
[edit] Etymology
From Latin ātrium (entry hall)
[edit] Noun
atrium (plural atria or atriums)
- (architecture) A central room or space in ancient Roman homes, open to the sky in the middle; a similar space in other buildings.
- (architecture) A square hall lit by daylight from above, into which rooms open at one or more levels.
- (anatomy) Any enclosed body cavity or chamber
- (anatomy) 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.
- (anatomy) A microscopic air sac within a pulmonary alveolus.
- (palynology) 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.
- 1965, Janet Kircher Warter, Palynology of a Lignite of Lower Eocene (Wilcox) Age from Kemper County[1], page 52:
- Nexine 0.5μ thick, separating from the sexine about 5μ from the pore and forming a deep, well-defined atrium.
- 1965, Janet Kircher Warter, Palynology of a Lignite of Lower Eocene (Wilcox) Age from Kemper County[1], page 52:
[edit] Synonyms
- (room in Roman homes): cavaedium
[edit] Translations
central room in Roman homes
square hall lit from above
body cavity
chamber of the heart
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[edit] Derived terms
[edit] Finnish
[edit] Noun
atrium
[edit] Declension
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Declension of atrium (type risti)
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[edit] Latin
[edit] Etymology
From Etruscan.
[edit] Pronunciation
[edit] Noun
ātrium (genitive ātriī); n, second declension
[edit] Inflection
| Number | Singular | Plural |
|---|---|---|
| nominative | ātrium | ātria |
| genitive | ātriī | ātriōrum |
| dative | ātriō | ātriīs |
| accusative | ātrium | ātria |
| ablative | ātriō | ātriīs |
| vocative | ātrium | ātria |
[edit] Derived terms
[edit] See also
[edit] Descendants
- English: atrium
