Lithocyst

n. [ Litho- + cyst. ] (Zool.) A sac containing small, calcareous concretions (otoliths). They are found in many Medusæ, and other invertebrates, and are supposed to be auditory organs. [ 1913 Webster ]

n. [ Litho- + cyst. ] (Zool.) A sac containing small, calcareous concretions (otoliths). They are found in many Medusæ, and other invertebrates, and are supposed to be auditory organs. [ 1913 Webster ]