alveolus Definition
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alveolus
noun alveoli
- 1. anatomy.
- In the lungs: any of the millions of tiny thin-walled air sacs in which oxygen from inhaled air is exchanged for carbon dioxide from the bloodstream.
- Form: pulmonary alveolus (also)
- A tooth socket in the jaw bone.
- Form: dental alveolus (also)
- Any small depression in the surface of an organ.
