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Meaning of air sac in English

  1. Pronunciation

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  1. Noun

    air sac

    Definitions

    1. a tiny sac for holding air in the lungs

    Examples

    • « formed by the terminal dilation of tiny air passageways »
  2. 2. any of the thin-walled extensions of the tracheae of insects
  3. 3. any of the membranous air-filled extensions of the lungs of birds

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