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Related to alveolus: respiratory system, alveoli
n. pl. al·ve·o·li (-lī′)
1. A small angular cavity or pit, such as a honeycomb cell.
2. A tooth socket in the jawbone.
3. A tiny, thin-walled, capillary-rich sac in the lungs where the exchange of oxygen and carbon dioxide takes place. Also called air sac.
[Latin, small hollow, diminutive of alveus, a hollow, from alvus, belly.]
n, pl -li (-ˌlaɪ)
1. (Anatomy) any small pit, cavity, or saclike dilation, such as a honeycomb cell
2. (Anatomy) any of the sockets in which the roots of the teeth are embedded
3. (Anatomy) any of the tiny air sacs in the lungs at the end of the bronchioles, through which oxygen is taken into the blood
[C18: from Latin: a little hollow, diminutive of alveus]
al•ve•o•lus(ælˈvi ə ləs)
n., pl. -li (-ˌlaɪ)
1. a little cavity, pit, or cell, as a cell of a honeycomb.
2. any of the tiny bunched air sacs at the ends of the bronchioles of the lungs.
3. the socket within the jawbone in which the root or roots of a tooth are set.
[1700–10; < Latin, =alve(us) concave vessel + -olus -ole1]
Plural alveoli (ăl-vē′ə-lī′)
Any of the tiny air-filled sacs arranged in clusters in the lungs that allow oxygen to diffuse into the bloodstream and carbon dioxide to diffuse out of it. Also called air sac.
One of the lungs’ tiny air sacs at the outer ends of the terminal bronchioles; also the bony socket supporting a tooth.
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|Noun||1.||alveolus - a tiny sac for holding air in the lungs; formed by the terminal dilation of tiny air passageways|
lung - either of two saclike respiratory organs in the chest of vertebrates; serves to remove carbon dioxide and provide oxygen to the blood
sac - a structure resembling a bag in an animal
|2.||alveolus - a bony socket in the alveolar ridge that holds a tooth|
socket - a bony hollow into which a structure fits