[ ik-thee-oh-sis ]
/ ˌɪk θiˈoʊ sɪs /

noun Pathology.

a hereditary skin disease in which the epidermis continuously flakes off in large scales or plates.

Nearby words

  1. ichthyornis,
  2. ichthyosarcotoxin,
  3. ichthyosaur,
  4. ichthyosaurus,
  5. ichthyosiform erythroderma,
  6. ichthyosis linearis circumscripta,
  7. ichthyosis sauroderma,
  8. ichthyosis simplex,
  9. ichthyosis uteri,
  10. ichthyosis vulgaris

Origin of ichthyosis

From New Latin, dating back to 1805–15; see origin at ichthy(o)-, -osis

Related formsich·thy·ot·ic [ik-thee-ot-ik] /ˌɪk θiˈɒt ɪk/, adjective

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for ichthyosis

British Dictionary definitions for ichthyosis


/ (ˌɪkθɪˈəʊsɪs) /


a congenital disease in which the skin is coarse, dry, and scalyAlso called: xeroderma Nontechnical name: fishskin disease
Derived Formsichthyotic (ˌɪkθɪˈɒtɪk), 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

Word Origin and History for ichthyosis



1815, Modern Latin, from Greek ikhthys "fish" + -osis.

Online Etymology Dictionary, © 2010 Douglas Harper

Medicine definitions for ichthyosis


[ ĭk′thē-ōsĭs ]


A congenital, often hereditary skin disease characterized by dry, thickened, scaly skin.alligator skin fish skin fishskin disease ichthyosis sauroderma

The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.