alveolus.
A small cavity or pit.
Meaning & usage
A small cavity or pit. Any of the many tiny air sacs in the lungs in which the bronchioles terminate and where oxygen and carbon dioxide are rapidly exchanged with the pulmonary capillaries.
A small cavity or pit. The bony socket in which the root of a tooth resides.
A small cavity or pit. An acinus (saclike cavity) in a gland.
A small cavity or pit. The socket of a macrotrichium (seta).
Where this word comes from
Etymology tree Proto-Indo-European *h₂ewlósder. Proto-Italic *aulos? Proto-Indo-European *h₂el-der. Proto-Indo-European *-wósder. Proto-Italic *alwos? Latin alvus Proto-Indo-European *-éyos Proto-Italic *-ejos Proto-Italic *-eos Latin -eus Latin alveus Proto-Indo-European *-lós Proto-Indo-European *-elós Proto-Italic *-elos Latin -ulus Latin -olus Latin alveolusbor. English alveolus Borrowed from Latin alveolus (“a small hollow or cavity”), diminutive of alveus (“a hollow, cavity”).
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Definitions, grammatical labels, IPA, etymology and examples: Wiktionary contributors, extracted by Kaikki / Wiktextract. Adapted under CC BY-SA 4.0. Selected fields and authored examples are shown; third-party quotations and audio are omitted. See contributor history.
Last enriched 2026-09-10. Definitions are in English. Romanizations are shown when supplied by the source; syllable estimates are omitted for unsupported scripts.