alveolus

Noun

Meaning

A cell in a honeycomb.

A small cavity in a coral, shell, or fossil

A small depression, sac, or vesicle, as the socket of a tooth, the air cells of the lungs, the ultimate saccules of glands, etc.

Source: Webster's dictionary

air sac air cell tooth socket dimple sac lumen back cell depression dent hole honey cavity pocket hollow

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mount galaxy mountain world increase headland

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sac socket

alveoli

It is usually lost at an early age, leaving no trace of the alveolus in the jaw. Source: Internet

The alveolus on the left is normal, whereas the one on the right is full of fluid from pneumonia. Source: Internet

The alveolus, respiratory bronchiole and surrounding blood vessels can be seen. Source: Internet

These type I cells also make up the alveolar septa which separate each alveolus. Source: Internet