Thinning of nails resulting in bending and breaking of the free edge, with longitudinal fissures. SYN: egg shell nail. [G. hapalos, soft + G. onyx (onych-), nail]
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hap·a·lo·nych·ia .hap-ə-lō-'nik-ē-ə n abnormal softness of the fingernails or toenails
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hap·a·lo·nych·ia (hap″ə-lo-nikґe-ə) onychomalacia.Medical dictionary. 2011.