1

callus

play
noun cal·lus \ˈka-ləs\

Definition of callus

  1. 1 :  a thickening of or a hard thickened area on skin or bark

  2. 2 :  a mass of exudate and connective tissue that forms around a break in a bone and is converted into bone in healing

  3. 3 :  soft tissue that forms over a wounded or cut plant surface

Origin and Etymology of callus

Latin


First Known Use: 1563


2

callus

verb cal·lus

Definition of callus

  1. intransitive verb
  2. :  to form callus

  3. transitive verb
  4. :  to cause callus to form on

1824

First Known Use of callus

1824


CALLUS Defined for English Language Learners

callus

play
noun

Definition of callus for English Language Learners

  • : a hard and thickened area on the skin and especially on the hands or feet


CALLUS Defined for Kids

callus

play
noun cal·lus \ˈka-ləs\

Definition of callus for Students

plural

calluses

  1. :  a hard thickened area on the skin and especially on the hands and feet


Medical Dictionary

callus

play
noun cal·lus \ˈkal-əs\

Medical Definition of callus

  1. 1:  a thickening of or a hard thickened area on skin

  2. 2:  a mass of exudate and connective tissue that forms around a break in a bone and is converted into bone in the healing of the break



Seen and Heard

What made you want to look up callus? Please tell us where you read or heard it (including the quote, if possible).

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

WORD OF THE DAY

the point at which something begins

Get Word of the Day daily email!

WORD GAMES

Take a 3-minute break and test your skills!

  • istock-refers-to-this-as-a-tumble-of-strawberries-which-sounded-pretty-nice-to-us
  • Which is a synonym of garner?
Spell It

Can you spell these 10 commonly misspelled words?

TAKE THE QUIZ
Word Winder's CrossWinder

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!