Otoconium definitions

(anatomy) An otolith or statolith.
noun
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Origin of otoconium

A Latinised adaptation (taking the form of a Latin second-declension neuter noun in the nominative case, as if from a Latin *ōtoconium) of the French otoconie (whence otocony, otokony), itself formed from the Ancient Greek roots οὖς, ὠτ- (ous, ōt-, “ot-”, “ear”) + κονία (konia, “dust”).