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koilonychia

[ koi-loh-nik-ee-uh ]

noun

, Medicine/Medical.
  1. an abnormal condition in which the outer surfaces of the nails are concave; spoon nail.

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Word History and Origins

Origin of koilonychia1

1900–05; < Greek koîl ( os ) hollow + onych- (stem of ónyx nail; onyx ) + -ia

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