a hardened or thickened part of the skin; a callosity.
a new growth of osseous matter at the ends of a fractured bone, serving to unite them.
Also callose. Botany.
the tissue that forms over the wounds of plants, protecting the inner tissues and causing healing.
a deposit on the perforated area of a sieve tube.
(in grasses) a tough swelling at the base of a lemma or palea.
to form a callus.
to produce a callus or calluses on: Heavy work callused his hands.
- un·cal·lused, adjective
- callous, callus
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
How to use callus in a sentence
She had earned some of the same rewards as the three Olympians — the calluses.Leah Falland was on her way to the Olympics, and then came the fall and the shock | Adam Kilgore | June 25, 2021 | Washington Post
In some ways the foot would become the shoe needed to make it through daily life because the body has the ability to build up calluses at the bottom of the foot.
The things that really hurt are gravel, knobbly things, things with a lot of texture, until you have calluses.
Instead of futilely trying to stay smooth, eventually it will develop calluses so it can better meet the challenge.
As Otto and I take our first cautious steps into the world together, I wish I could keep our bubble wrapped around us, grow calluses and not care when people stare, become impenetrable.My Pandemic Baby Is Pulling Us Out of Our Cozy Cave. But How Will the World See a Disabled Mother Like Me? | Rebekah Taussig | April 28, 2021 | Time
This callus may form upon any cut surface, or even where the bark has been abraded.American Pomology | J. A. Warder
You can get the callus almost every time, but it is very difficult to secure the development of roots afterwards.
President Morris: How about getting callus by three months, we will say, in storage?
On January 11 the cambium ring at the lower end of the cuttings had begun to callus.
The butternut and black walnut hardly showed any callus at all after keeping the sphagnum wet as long as my men would do it.
British Dictionary definitions for callus
Also called: callosity an area of skin that is hard or thick, esp on the palm of the hand or sole of the foot, as from continual friction or pressure
an area of bony tissue formed during the healing of a fractured bone
a mass of hard protective tissue produced in woody plants at the site of an injury
an accumulation of callose in the sieve tubes
biotechnology a mass of undifferentiated cells produced as the first stage in tissue culture
to produce or cause to produce a callus
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
Scientific definitions for callus
An area of the skin that has become hardened and thick, usually because of prolonged pressure or rubbing.
The hard bony tissue that develops around the ends of a fractured bone during healing.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.