atrium
IPA: ˈeɪtriʌm
noun
- (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) A cavity, entrance, or passage.
- (biology) 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.
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Examples of "atrium" in Sentences
- This is transmitted to the atrium.
- Blood is mixed in the left atrium.
- A triple arcade leads to the atrium.
- The atrium is crowned with a skylight.
- Functions as a reservoir for the left atrium.
- In the left atrium, the junction is at the pulmonary veins.
- Attached to the right atrium is the right auricular appendix.
- Between the atrium and the peristyle, the tablinum would be constituted.
- The coronary sinus empties the heart's veins themselves into the right atrium.
- As the centrepiece of the house the atrium was the most lavishly furnished room.