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[ker-uh-toh-sis] /ˌkɛr əˈtoʊ sɪs/
noun, plural keratoses
[ker-uh-toh-seez] /ˌkɛr əˈtoʊ siz/ (Show IPA).
any skin disease characterized by a horny growth, as a wart.
any horny growth.
Also, keratoma.
Origin of keratosis
1880-85; kerat- + -osis
Related forms
keratosic, keratotic
[ker-uh-tot-ik] /ˌkɛr əˈtɒt ɪk/ (Show IPA),
adjective Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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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 Henry Weightman Stelwagon
  • keratosis palmaris et plantaris (symmetric keratodermia), as regards the local condition, is a somewhat similar affection.

    Essentials of Diseases of the Skin Henry Weightman Stelwagon
British Dictionary definitions for keratosis


noun (pathol)
any skin condition marked by a horny growth, such as a wart
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
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keratosis in Medicine

keratosis ker·a·to·sis (kěr'ə-tō'sĭs)
n. pl. ker·a·to·ses (-sēz)
Excessive growth of horny tissue of the skin.

ker'a·tot'ic (-tŏt'ĭk) 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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