onychorrhexis

[ ŏn′ĭ-kə-rĕksĭs ]

n.

Abnormal brittleness of the fingernails or toenails with splitting of the free edge.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.