bn:00002255n
Noun Concept
Categories: Anatomy
EN
air sac  air sacs  air-sac  air-sacs
EN
Any of the membranous air-filled extensions of the lungs of birds WordNet 3.0
Definitions
Relations
Sources
EN
Air sacs are spaces within an organism where there is the constant presence of air. Wikipedia
An extension of a lung of some birds. Wiktionary
WordNet 3.0 & Open English WordNet
EN
Wikipedia
EN
Wikidata
EN
Wiktionary
EN
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Wikidata Alias