| 单词 | koilonychia |
| 释义 | koilonychia /koy'loh nik"ee euh/, n. Med. an abnormal condition in which the outer surfaces of the nails are concave; spoon nail. [1900-05; < Gk koîl(os) hollow + onych- (s. of ónyx nail; see ONYX) + -IA] |
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