noun Medicine/Medical.

an abnormal condition in which the outer surfaces of the nails are concave; spoon nail.

Nearby words

  1. kohoutek,
  2. kohutuhutu,
  3. koi,
  4. koilocyte,
  5. koilocytosis,
  6. koine,
  7. koinonia,
  8. koizumi,
  9. koji,
  10. kok-saghyz

Origin of koilonychia

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

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Medicine definitions for koilonychia




A nail deformity characterized by concavity of the outer surface of the nail.celonychia spoon nail

The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.