otoconia
noun plural
oto·co·nia
| \ -ˈkō-nē-ə
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Medical Definition of otoconia
: small crystals of calcium carbonate in the saccule and utricle of the ear that under the influence of acceleration in a straight line cause stimulation of the hair cells by their movement relative to the gelatinous supporting substrate containing the embedded cilia of the hair cells
— called also statoconia