Also found in: Dictionary, Thesaurus, Legal, Financial, Encyclopedia.
Thinning of nails resulting in bending and breaking of the free edge, with longitudinal fissures.
Synonym(s): eggshell nail
[G. hapalos, soft + G. onyx (onych-), nail]
A condition in which the nail plate is soft and semitransparent, bends easily, and splits at the end. The condition is associated with arthritis, peripheral neuritis, leprosy, and hemiplegia. It may be the only visible sign of late syphilis.
See also: nail