from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. Plural form of alveolus.

from The Century Dictionary and Cyclopedia

  • n. Plural of alveolus.


Sorry, no etymologies found.


  • Within alveoli, oxygen from inhaled air is absorbed into the bloodstream in exchange for carbon dioxide waste that is exhaled.


  • At the end of each bronchiole are tiny sacs called alveoli, each one of them lined with a thin layer of fluid that keeps each alveolus open.

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  • The lungs contain tiny air sacs known as alveoli and bronchioles, the narrow passages leading to the air sacs which become permanently distended with air under this condition.

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  • The lungs that look like a pair of pink sponges in our chest, for example, contain about 600 million tiny air sacks called alveoli and have 750 woven miles of blood vessels.

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  • Finding its way into the smallest divisions of the lungs, called the alveoli, the air comes very near a large surface of blood.

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  • The lung is composed of networks of increasingly tiny airways which, if laid out end-to-end, would extend for 1,500 miles, as well as tiny air sacs called alveoli which, if flattened, would have the surface area of a tennis court. - latest science and technology news stories

  • Buried in the depths of healthy lung tissue, tiny groups of cells called alveoli stretch open to accommodate oxygen with each breath and then remove carbon dioxide during exhalation. - latest science and technology news stories

  • Lungs contain tiny groups of cells called alveoli, which are lined with a layer of epithelial cells that serve as a critical barrier. News Feed

  • The device, about the size of a pea, mimics the function of air sacs called alveoli, which transfer oxygen through a thin membrane from the lung to the blood. Top Stories

  • The lung contains an intricate branching architecture of airways, blood vessels, and hundreds of millions of tiny sacs, called alveoli, where gases are exchanged. Most Popular


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