koilonychia是什么意思

n.[医]反甲,凹甲

1. Koilonychia is often associated with iron deficiency anemia.
(医学术语中) 凹陷的指甲常与缺铁性贫血有关。

2. The patient presented with koilonychia, which is a characteristic sign of iron deficiency.
这名患者出现了凹陷的指甲，这是缺铁导致的一个典型表现。

医学术语，指指甲的形状异常，中间凹陷，两个边缘向上翘曲。