Definition of lagena in English:

lagena

Syllabification: la·ge·na
Pronunciation: /ləˈjēnə
 
/

noun (plural lagenae /-ˈjēˌnē/)

Zoology
  • An extension of the saccule of the ear in some vertebrates, corresponding to the cochlear duct in mammals.
    More example sentences
    • 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.

Origin

late 19th century: from Latin, literally 'flagon', from Greek lagunos.

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