Dictionary entry

Otocyst

Webster's Dictionary 1913

O″to‐cyst (?), n. [Oto- + cyst.] (Zoöl. & Anat.) 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.