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Medical Definition of Brachyonychia
1. Short nails, in which the width of the nail plate and nail bed is greater than the length; may be congenital or result from nail biting, bone resorption in hyperparathyroidism, or psoriatic arthropathy. Origin: G. Brachys, short + onyx, onychos, nail, + suffix -ia, condition (05 Mar 2000)