noun (plural lagenae /-ˈjēˌnē/)Zoology
An extension of the saccule of the ear in some vertebrates, corresponding to the cochlear duct in mammals.
- In mammals, the lagena is coiled and is referred to as the cochlea.
- Mammals, crocodilians and dinosaurs independently evolved acute, pitch-sensitive hearing by elongating the lagena (called the cochlea in mammals).
- The mammalian lagena, called a cochlea, is spiral-shaped and drills into the surrounding bone like a corkscrew opening some debased Australian vintage stoppered with bone.
Late 19th century: from Latin, literally 'flagon', from Greek lagunos.
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