Anatomy, Zoology. a calcareous concretion in the internal ear of vertebrates.
statolith ( def 1 ).

1825–35; oto- + -lith

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World English Dictionary
otolith (ˈəʊtəʊˌlɪθ)
1.  any of the granules of calcium carbonate in the inner ear of vertebrates. Movement of otoliths, caused by a change in position of the animal, stimulates sensory hair cells, which convey the information to the brain
2.  another name for statolith

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Medical Dictionary

otolith o·to·lith (ō'tə-lĭth')

  1. Any of numerous minute calcareous particles found in the inner ear of certain lower vertebrates and in the statocysts of many invertebrates.

  2. See otosteon.

o'to·lith'ic adj.
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Example sentences
Counts of annuli in otolith thin sections have been used to age many species of fish, including red snapper.
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