Origin of hyperkeratosis
First Known Use: 1841
Medical Definition of hyperkeratosis
plural hyperkeratoses \-ˈtō-ˌsēz\play
1: hypertrophy of the stratum corneum layer of the skin
2a: any of various conditions marked by hyperkeratosisb: a disease of cattle that is marked by thickening and wrinkling of the hide, by formation of papillary outgrowths on the buccal mucous membranes, and often by a watery discharge from eyes and nose, diarrhea, loss of weight, and abortion of pregnant animals and that is caused especially by ingestion of the chlorinated naphthalene of various lubricating oils, by arsenic poisoning, or by inherited congenital ichthyosis—called also ,
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