Definition of Alveolus

1. Noun. A tiny sac for holding air in the lungs; formed by the terminal dilation of tiny air passageways.

Exact synonyms: Air Cell, Air Sac
Group relationships: Lung
Generic synonyms: Sac
Derivative terms: Alveolate

2. Noun. A bony socket in the alveolar ridge that holds a tooth.
Exact synonyms: Tooth Socket
Generic synonyms: Socket
Group relationships: Alveolar Process, Alveolar Ridge, Gum Ridge

Definition of Alveolus

1. n. A cell in a honeycomb.

Definition of Alveolus

1. Noun. A small cavity or pit. ¹

2. Noun. (anatomy) an anatomical structure that has the form of a hollow cavity ¹

3. Noun. (anatomy) a small air sac in the lungs, where oxygen and carbon dioxide are exchanged with the blood. ¹

¹ Source:

Definition of Alveolus

1. a small anatomical cavity [n -LI]

Medical Definition of Alveolus

1. A small cell containing air in the lungs, a sac-like dilation of the alveolar ducts in the lung (plural: alveoli) (27 Sep 1997)

Alveolus Pictures

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Lexicographical Neighbors of Alveolus

alveolodental ligament
alveolodental membrane
alveololingual groove
alveololingual sulcus
alveolonasal line
alveolus (current term)
alveolus dentalis
alveus hippocampi
alveus of hippocampus
alvine evacuations

Literary usage of Alveolus

Below you will find example usage of this term as found in modern and/or classical literature:

1. A Practical Treatise on Operative Dentistry by Jonathan Taft (1883)
"The ordinary fracture of the alveolus is a matter of no considerable consequence, if it receives proper attention. This fracture occurs to a greater or less ..."

2. Pye's Surgical Handicraft: A Manual of Surgical Manipulations, Minor Surgery by Walter Pye (1893)
"184, in life, the layer of alveolus on the CP FIG. 184. ... Upper Bicuspid and alveolus. AA, I liner and Outer alveolus; o, Gum ; D, Dentine ; E, Enamel; ..."

3. The International Journal of Orthodontia (1916)
"8 shows a medullary space in the substance of the lateral plate of the alveolus near the periosteal border. 1 is the periosteum (this picture was made very ..."

4. The London Medical Gazette (1842)
"At half- past four of the same day, Mr. P. called again, the blood flowing in a continued stream, evidently from the anterior alveolus: cleaned it out from ..."

5. Practical Microscopy: A Course of Normal Histology for Students and by Maurice Norton Miller (1887)
"A, A, A. Walls of the alveolus. B, B. Injected capillaries. ... The observer is supposed to be above the sectioned alveolus, viewing the cup-shaped cavity. ..."

6. A Text-book of physiology by Isaac Ott (1913)
"Termination of a Bronchus in an alveolus. a, Bronchiole. 6, Cavity of the alveolus, r. Air-cells. flat, thin epithelium also lies over the blood-vessels and ..."

7. Bulletin of the American Museum of Natural History by American Museum of Natural History (1921)
"The first alveolus in the specimen is in the position usual for the third ... This alveolus is of moderate size. Immediately posterior to the first alveolus ..."

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