lagena /ləˈjēnə, ləˈdʒinə 
/ ▸ noun (plural lagenae /-ˈjēˌnē/) Zoology an extension of the saccule of the ear in some vertebrates, corresponding to the cochlear duct in mammals. – ORIGIN late 19th century : from Latin, literally ‘flagon’, from Greek lagunos.
EnglishOxford New American Dictionary
