We found 25 dictionaries that define the word air sac:

General (19 matching dictionaries)

1. air sac: Merriam-Webster
2. air sac: Oxford Learner's Dictionaries
3. air sac: American Heritage Dictionary of the English Language
4. air sac: Collins English Dictionary
5. air sac: Vocabulary.com
6. air sac: Wordnik
7. air sac: Cambridge Advanced Learner's Dictionary
8. air sac: Wiktionary
9. air sac: The Wordsmyth English Dictionary-Thesaurus
10. air sac: Infoplease Dictionary
11. air sac: Dictionary.com
12. Air sac: Wikipedia, the Free Encyclopedia
13. Air sac: Online Plain Text English Dictionary
14. air sac: Rhymezone
15. Air sac: AllWords.com Multi-Lingual Dictionary
16. air sac: FreeDictionary.org
17. air sac: Mnemonic Dictionary
18. air sac: TheFreeDictionary.com
19. air sac: Merriam-Webster

Computing (1 matching dictionary)

20. air sac: Encyclopedia

Medicine (3 matching dictionaries)

21. air sac: Merriam-Webster Medical Dictionary
22. online medical dictionary (No longer online)
23. air sac: Medical dictionary

Science (2 matching dictionaries)

24. Bird On! (No longer online)
25. Glossary of Entomology (No longer online)

(Note: See air_sacs as well.)

Definitions from Wiktionary (air sac) ▸ noun:  An alveolus ▸ noun:  An extension of a lung of some birds Similar: alveolus, air cell, airsac, atrium, pulmonary alveolus, alveolous, alveolae, dental alveolus, alveolarization, alveolar bed, more... Opposite: lung, bronchus, alveolus, pleura, diaphragm Types: alveolus, alveoli, more... Adjectives: alveolar, tubuloalveolar, sialic, facial, apellous, subungual, periodontopathic, ampullary, foraminal, nasoalveolar, throated ▸ Words similar to air sac ▸ Usage examples for air sac ▸ Idioms related to air sac ▸ Wikipedia articles (New!) ▸ Words that often appear near air sac ▸ Rhymes of air sac ▸ Invented words related to air sac