• synonyms


noun, plural cal·los·i·ties.
  1. a callous condition.
  2. Botany. a hardened or thickened part of a plant.
  3. Pathology. callus(def 1a).
Show More

Origin of callosity

1375–1425; late Middle English calosite < Late Latin callōsitās, equivalent to callōs(us) callous + -itās -ity
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for callosity

Historical Examples of callosity

  • A callosity is a circumscribed thickening of the stratum cornium.

    Surgery, with Special Reference to Podiatry

    Maximilian Stern

  • On the knee is a callosity, or round patch of bare hardened skin.

    Unexplored Spain

    Abel Chapman

  • He wonders why a bare patch, and not a callosity, should not result from this innate, apparently hereditary habit.

  • They attributed the halting in the hind legs of a lamb to a callosity formed around the spinal cord.

  • In the case of the Macartney marriage I suspect this to have been the only kind—a kind of callosity, protective and numbing.

    Love and Lucy

    Maurice Henry Hewlett

British Dictionary definitions for callosity


noun plural -ties
  1. hardheartedness
  2. another name for callus (def. 1)
Show More
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

callosity in Medicine


  1. A localized thickening and enlargement of the horny layer of the skin.callus keratoma poroma tyloma
Show More
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.