alveolus
Plural: alveoli
[L. alveolus, small hollow, cavity]
- A small hollow.
- The bony socket of a tooth.
- An air sac of the lungs.
SEE: illus..
- Any of the honeycombed depressions of the gastric mucous membrane.
- A follicle of a racemose gland .
alveoli of the breast Gland ular structures arranged in clusters throughout the breast and the site of milk synthesis.
pulmonary a.Any of the terminal epithelial sacs of an alveolar duct where gases are exchanged in respiration. It is informally called an air sac.SYN: alveolar sac.