4a structure resembling a bag in an animal
Hyponymsacinus, air bladder, air sac, alveolus, amnion, bladder, bursa, chorion, cisterna, coelenteron, pericardial sac, pouch, saccule, vesicle, yolk sac,
Hypernymscavity,
Type ofbodily cavity, cavity, cavum,
Typesacinus, air bladder, air cell, air sac, alveolus, amnion, amnios, amniotic sac, bladder, bursa, chorion, cistern, cisterna, coelenteron, cyst, pericardial sac, pocket, pouch, saccule, sacculus, swim bladder, umbilical vesicle, vesica, vesicle, vesicula umbilicus, vitelline sac, yolk sac,