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n. A small angular cavity or pit, such as a honeycomb cell.

n. A tooth socket in the jawbone.

n. A tiny, thin-walled, capillary-rich sac in the lungs where the exchange of oxygen and carbon dioxide takes place. Also called air sac.

n. A small cavity or pit.

n. an anatomical structure that has the form of a hollow cavity

n. a small air sac in the lungs, where oxygen and carbon dioxide are exchanged with the blood.

n. A cell in a honeycomb.

n. A small cavity in a coral, shell, or fossil.

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

n. In general, any little cell, pit, cavity, fossa, or socket, as one of the cells of a honeycomb, etc. Also called alveole.

n. Specifically, in zoology: The socket of a tooth; the pit in a jaw-bone in which a tooth is inserted.

n. An air-cell; one of the compartments, about one hundredth of an inch in diameter, which line the infundibula and alveolar passages of the lungs.

n. One of the pits or compartments in the mucous membrane of the second stomach of a ruminant; a cell of ”honeycomb” tripe. See cut under ruminant.

n. A certain vacant space in the sarcode of a radiolarian, either within or without the capsule. Pascoe.

n. A cell or pit in certain fossils, as in an alveolite.

n. One of the ultimate follicles of a racemose gland. See acinus, 2 .

n. One of the five hollow cuneate calcareous dentigerous pieces which enter into the composition of the complex dentary apparatus or oral skeleton of a sea-urchin. See lantern of Aristotle (under lantern), and cuts under clypeastrid and Echinoidea.

n.

n. a tiny sac for holding air in the lungs; formed by the terminal dilation of tiny air passageways

n. a bony socket in the alveolar ridge that holds a tooth

"The light from the Proteus penetrated through what seemed to him a vast thickness of tissue and in its muted intensity, the alveolus was a tremendous cavern, with walls that glinted moistly and distantly."

sac    socket   

alvine calculi   

alveoli   

alveolar    alveolate   

filiform    anasarca    parasail    penestral    lifesaver    howe'er    pessary    exists'    oedema    unself-consciousness