[ hahy-per-ker-uh-toh-sis ]

  1. Pathology.

    • proliferation of the cells of the cornea.

    • a thickening of the horny layer of the skin.

  2. Also called x-disease. Veterinary Pathology. a disease of cattle resulting from their physical contact with or eating of objects or food contaminated by wood preservatives or machinery lubricants containing highly chlorinated naphthalenes, characterized by thickening and hardening of the skin, abnormal secretion of tears and saliva, and diarrhea.

Origin of hyperkeratosis

From New Latin, dating back to 1835–45; see origin at hyper-, keratosis

Other words from hyperkeratosis

  • hy·per·ker·a·tot·ic [hahy-per-ker-uh-tot-ik], /ˌhaɪ pərˌkɛr əˈtɒt ɪk/, adjective

Words Nearby hyperkeratosis

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

British Dictionary definitions for hyperkeratosis


/ (ˌhaɪpəˌkɛrəˈtəʊsɪs) /

  1. pathol overgrowth and thickening of the outer layer of the skin

Derived forms of hyperkeratosis

  • hyperkeratotic (ˌhaɪpəˌkɛrəˈtɒtɪk), adjective

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012