hyperkeratosis

noun hy·per·ker·a·to·sis \ˌhī-pər-ˌker-ə-ˈtō-səs\

plural hy·per·ker·a·to·ses\-ˈtō-ˌsēz\

Definition of HYPERKERATOSIS

: hypertrophy of the corneous layer of the skin

— hy·per·ker·a·tot·ic \-ˈtä-tik\ adjective

Origin of HYPERKERATOSIS

New Latin

First Known Use: 1841

Medical Dictionary

hyperkeratosis

noun hy·per·ke·ra·to·sis \-ˌker-ə-ˈtō-səs\

plural hy·per·ke·ra·to·ses \-ˈtō-ˌsēz\

Medical Definition of HYPERKERATOSIS

: hypertrophy of the stratum corneum layer of the skin

a : any of various conditions marked by hyperkeratosis b : 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 X-disease, XX disease

—hy·per·ker·a·tot·ic \-ˈtät-ik\ adjective