The Collaborative International Dictionary
Otocyst
Otocyst \O"to*cyst\, n. [Oto- + cyst.] (Zo["o]l. & 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.
Wiktionary
otocyst
n. 1 (context invertebrate zoology English) An organ involved in balance and orientation. 2 (context vertebrate embryology English) The precursor of the inner ear.
Usage examples of "otocyst".
Because the statocyst is located in the internal ear, it is more commonly, though less appropriately, called the otocyst (oh'toh-sist.