Atrium

Quick meaning: Atrium is a noun meaning (architecture) A central room or space in ancient Roman homes, open to the sky in the middle; a similar space in other buildings.

Meaning

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

More Meanings

1. (architecture) A square hall lit by daylight from above, into which rooms open at one or more levels.
2. (anatomy) A cavity, entrance, or passage.
3. (biology) Any enclosed body cavity or chamber.
4. (anatomy) A microscopic air sac within a pulmonary alveolus.
5. (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.
6. (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.

Example Sentences

an atrium of the infundibula of the lungs

Nexine 0.5μ thick, separating from the sexine about 5μ from the pore and forming a deep, well-defined atrium.

Word Forms

• atria
• atriums

Synonyms for atrium

Depending on context, synonyms include cavaedium.

Related Words

Related dictionary entries include basement, court, hall, cellar, cave, concourse.

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