Definition from Wiktionary, the free dictionary
otocyst (plural otocysts)
- (invertebrate zoology) An organ involved in balance and orientation.
1898, E. P. Lyon, “The Functions of the Otocyst”, The Journal of Comparative Neurology, volume 8:
- If the otocysts were removed from these animals, they swam normally and no peculiarities were observed in their behavior.
- (vertebrate embryology) The precursor of the inner ear.
balance organ in invertebrates
precursor to the inner ear in vertebrates