• WordNet 3.6
    • n alveolus a bony socket in the alveolar ridge that holds a tooth
    • n alveolus a tiny sac for holding air in the lungs; formed by the terminal dilation of tiny air passageways
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Webster's Revised Unabridged Dictionary
    • Alveolus A cell in a honeycomb.
    • Alveolus (Zoöl) A small cavity in a coral, shell, or fossil
    • Alveolus (Anat) A small depression, sac, or vesicle, as the socket of a tooth, the air cells of the lungs, the ultimate saccules of glands, etc.
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Century Dictionary and Cyclopedia
    • n alveolus In general, any little cell, pit, cavity, fossa, or socket, as one of the cells of a honeycomb, etc. Also called alveole.
    • n alveolus Specifically, in zoology: The socket of a tooth; the pit in a jaw-bone in which a tooth is inserted.
    • n alveolus 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 alveolus 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 alveolus A certain vacant space in the sarcode of a radiolarian, either within or without the capsule. Pascoe.
    • n alveolus A cell or pit in certain fossils, as in an alveolite.
    • n alveolus One of the ultimate follicles of a racemose gland. See acinus, 2 .
    • n alveolus 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.
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Webster's Revised Unabridged Dictionary
L., a small hollow or cavity, dim. of alveus,: cf. F. alvéole,. See Alveary


In literature:

Alveolus: a cell, like that of a honeycomb.
"Explanation of Terms Used in Entomology" by John. B. Smith
The margins of the cleft in the lip are also attached to the alveolus by firm reflections of the mucous membrane.
"Manual of Surgery Volume Second: Extremities--Head--Neck. Sixth Edition." by Alexander Miles
It was compared by the Academicians to a great tooth half extracted from the alveolus, with the upper part of the fangs exposed.
"Principles of Geology" by Charles Lyell
The tooth should be pulled out straight, lest the alveolus be broken.
"Surgical Instruments in Greek and Roman Times" by John Stewart Milne

In science:

The same concept of the alveolar structure as the SiECAL, see Section 3, is also employed for ScECAL: a pair of sensor layers on either side of a tungsten absorber plate is inserted into an alveolus, where each sensor layer is read out via a printed circuit board (PCB).
Calorimetry for Lepton Collider Experiments - CALICE results and activities