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noun, plural ker·a·to·ses [ker-uh-toh-seez] /ˌkɛr əˈtoʊ siz/. Pathology.
  1. any skin disease characterized by a horny growth, as a wart.
  2. any horny growth.
Also keratoma.

Origin of keratosis

First recorded in 1880–85; kerat- + -osis
Related formsker·a·to·sic, ker·a·tot·ic [ker-uh-tot-ik] /ˌkɛr əˈtɒt ɪk/, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for keratosis

Historical Examples

  • Keratosis of the palms and soles has also been occasionally observed, which, in rare instances, has developed into epithelioma.

    Essentials of Diseases of the Skin</p>

    Henry Weightman Stelwagon

  • Keratosis palmaris et plantaris (symmetric keratodermia), as regards the local condition, is a somewhat similar affection.

British Dictionary definitions for keratosis


noun pathol
  1. any skin condition marked by a horny growth, such as a wart
  2. a horny growth
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

keratosis in Medicine


([object Object])
n. pl. ker•a•to•ses (-sēz)
  1. Excessive growth of horny tissue of the skin.
Related formsker′a•totic (-tŏtĭk) adj.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

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