Otocyst
Pronunciation : O"to*cyst
Part of Speech : n.
Etymology : [Oto- + cyst.] (Zo?l. & Anat.)
Definition : Defn: An auditory cyst or vesicle; one of the simple auditory organs of many invertebrates, containing a fluid and otoliths; also, the embryonic vesicle from which the parts of the internal ear of vertebrates are developed.
Source : Webster's Unabridged Dictionary, 1913