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Alveolus

//ˌal.viˈəʊ.ləs// noun

Definitions

Noun
  1. 1
    A small cavity or pit.; Any of the many tiny air sacs in the lungs in which the bronchioles terminate and where oxygen and carbon dioxide are rapidly exchanged with the pulmonary capillaries.
  2. 2
    a bony socket in the alveolar ridge that holds a tooth wordnet
  3. 3
    A small cavity or pit.; The bony socket in which the root of a tooth resides.
  4. 4
    a tiny sac for holding air in the lungs; formed by the terminal dilation of tiny air passageways wordnet
  5. 5
    A small cavity or pit.; An acinus (saclike cavity) in a gland.

    "The sprouts proliferate and canalize to form the lactiferous ducts and the outbuddings form the alveoli of the mammary glands."

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  1. 6
    A small cavity or pit.; The socket of a macrotrichium (seta).

Etymology

Borrowed from Latin alveolus (“a small hollow or cavity”), diminutive of alveus (“a hollow, cavity”).

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