Definition of otoconium in US English:

otoconium

noun

Anatomy
  • A small calcareous particle in the inner ear of a vertebrate or the otocyst of an invertebrate; an (individual) otolith or statolith.

Origin

Mid 19th century; earliest use found in Todd's Cyclopaedia of Anatomy and Physiology. From French otoconie otocony, after Latin nouns in -um.

Pronunciation

otoconium

/ˌəʊtə(ʊ)ˈkəʊnɪəm/