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callus definition

cal·lus (kal′əs)

noun pl. calluses -·luses

  1. a hardened, thickened place on the skin
  2. the hard substance that forms at the break in a fractured bone and serves to reunite the parts
  3. a disorganized mass of cells that develops over cuts or wounds on plants, as at the ends of stem or leaf cuttings

Etymology: L, var. of callum, hard skin

intransitive verb, transitive verb

to develop or cause to develop a callus

Webster's New World College Dictionary Copyright © 2005 by Wiley Publishing, Inc., Cleveland, Ohio.
Used by arrangement with John Wiley & Sons, Inc.

Alternate definitions:

medical callus definition - medical

callus Usage Examples

Object

  • hand: He dismissed me with a wave of his callused hand.

Converse of object

  • form: The tree responds with growing a protective callus formed of cork.

Adjective modifier

  • sharp: The sharp callus of the mature fruit can become entangled in the wool of sheep ( Watt & Breyer-Brandwijk 1962 ).

Modifies a noun

  • formation: In the past, school tissue culture methods have relied on callus formation using carrot or cauliflower.

Preposition: of

  • fruit: The sharp callus of the mature fruit can become entangled in the wool of sheep ( Watt & Breyer-Brandwijk 1962 ).
callus usage examples (more)

The word usage examples above have been gathered from various sources to reflect current and historical usage. They do not represent the opinions of YourDictionary.com.

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MLA Style

"callus." Webster's New World College Dictionary. 2009

  • Your Dictionary. 5 July 2009
  • <www.yourdictionary.com/callus>

APA Style

callus. (2009). In Webster's New World College Dictionary

  • Retrieved July 5th, 2009, from www.yourdictionary.com/callus

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