otolith
a free body in the inner ear used for perception of acceleration including gravity. Composed of aragonite, a form of calcium carbonate, with up to 10% otolin, a protein. The lapillus lies in the utricle, the sagitta in the saccule, and the asteriscus in the lagena. Also called statoliths or ear stones, and incorrectly ear bone. See otoconium, marginaria and jewellery

Dictionary of ichthyology. 2009.

Look at other dictionaries:

  • Otolith — organs showing detail of utricle, ococonia, endolymph, cupula, macula, hair cell filaments, and saccular nerve …   Wikipedia

  • Otolith — O to*lith, Otolite O to*lite, n. [Oto + lith, lite.] (Anat.) One of the small bones or particles of calcareous or other hard substance in the internal ear of vertebrates, and in the auditory organs of many invertebrates; an ear stone.… …   The Collaborative International Dictionary of English

  • otolith — [ōt′ō lith΄] n. [ OTO + LITH] 1. a tiny, bonelike particle or stony, platelike structure in the internal ear of lower vertebrates 2. a similar calcareous concretion in the statocyst of many invertebrates otolithic adj …   English World dictionary

  • Otolith — Otolithen eines Adlerfischs (von oben nach unten: Maßstab in mm, Innenseite, Außenseite) Otolit …   Deutsch Wikipedia

  • otolith — noun Etymology: French otolithe, from ot + lithe lith Date: circa 1836 a calcareous concretion in the inner ear of a vertebrate or in the otocyst of an invertebrate • otolithic adjective …   New Collegiate Dictionary

  • otolith — see statolith …   Dictionary of invertebrate zoology

  • otolith — /oht l ith/, n. 1. Anat., Zool. a calcareous concretion in the internal ear of vertebrates. 2. statolith (def. 1). [1825 35; OTO + LITH] * * * …   Universalium

  • otolith — noun A small particle, comprised mainly of calcium carbonate, found in the inner ear of vertebrates, being part of the balance sense. Syn: otoconium, otosteon, statoconium, statolith …   Wiktionary

  • Otolith — Oto|lith 〈m. 16; Med.〉 Steinchen im Gleichgewichtsorgan [<grch. ous, Gen. otos „Ohr“ + lithos „Stein“] * * * Oto|lith [auch: ...lɪt], der; s u. en, e[n] [↑ lith] (Med.): kleiner prismatischer Kristall aus kohlensaurem Kalk im… …   Universal-Lexikon

  • otolith — oto·lith ōt əl .ith n a calcareous concretion in the inner ear of a vertebrate or in the otocyst of an invertebrate that is esp. conspicuous in many bony fishes where it forms a hard body and in most of the higher vertebrates where it is… …   Medical dictionary

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