"air sac" in German air sac Lungenbläschen Alveole Detailed translations for "air sac" air sac air sac(also: alveolus, pulmonary alveolus) das Lungenbläschen{neuter} air sac(also: alveolus, pulmonary alveolus) die Alveole{feminine} English synonyms for "air sac" air sac {n} air cell alveolus