o.to.lithn.（名词）One of many minute calcareous particles found in the inner ear of certain lower vertebrates and in the statocysts of many invertebrates.耳石：某些低等脊椎动物的内耳和许多无脊椎动物的平衡囊中的细小石灰质微粒【引伸】o.tolith.icadj.（形容词）
