cal·​lus | \ ˈka-ləs How to pronounce callus (audio) \

Definition of callus

 (Entry 1 of 2)

1 : a thickening of or a hard thickened area on skin or bark
2 : a mass of exudate and connective tissue that forms around a break in a bone and is converted into bone in healing
3 : soft tissue that forms over a wounded or cut plant surface


callused; callusing; calluses

Definition of callus (Entry 2 of 2)

intransitive verb

: to form callus

transitive verb

: to cause callus to form on

Examples of callus in a Sentence

Recent Examples on the Web: Noun Arihara received an injection in the middle finger of his right hand Saturday to relieve pain under a callus and will miss his scheduled start Wednesday in Minnesota. Kevin Sherrington, Dallas News, "Rangers’ Kohei Arihara (callus) to miss start Wednesday vs. Minnesota," 2 May 2021 Hertle was determined to look at what was going on in the callus. Quanta Magazine, "Plant Cells of Different Species Can Swap Organelles," 20 Jan. 2021 Some of my favorite products that show up in the beauty closet end up being the most mundane—think deodorant, tweezers, or callus buffers. Taylore Glynn, Marie Claire, "Lumify Eye Drops Are the Secret to Good Makeup," 13 Oct. 2020 Certain epilators are designed for multipurpose use and include attachment heads for pedicures, shaving, massages, or callus removal. Sian Babish,, "The best epilator of 2020," 1 Oct. 2020 This allows the shoe to expand gradually while minimizing any pressure or friction that would otherwise cause pain or discomfort, swelling, calluses and blisters. Stephanie Mansour, NBC News, "Best women's walking shoes and sneakers, according to experts," 29 Apr. 2020 The vegan formula can also be used to soothe burns, calluses, and even stretch marks. Maya Gandara,, "Shoppers Swear By Derma-E’s Scar Gel For Healing Stubborn Acne Marks," 15 Apr. 2020 One of my patients, a veteran with diabetes, had a callus — an area of thickened skin — on his foot. David G. Armstrong, STAT, "Diabetic foot ulcers: a silent killer of veterans," 11 Nov. 2019 Neither the size, the narrowness, the fallen arches, emerging bunions, an odd callus or two, Morton’s toes (second toes longer than the firsts) nor — what is certainly a sign of evolutionary progress — the absence of baby toenails put him off. Los Angeles Times, "He was seeking custom-made boots. The journey led to a life deeply touched by love and death and leather," 22 Oct. 2019 Recent Examples on the Web: Verb If the patches are dry and callused, the fruits should store okay in your basement. Ellen Nibali,, "Garden Q&A: Milkweed bugs and butternut squash," 26 Sep. 2019 That seems an obvious goal for a hitter, of course, but with a baseball mind callused by a few long seasons someone like Semien didn’t become stuck in his ways, but more than willing to fix his faults. Shayna Rubin, The Mercury News, "A’s shortstop Marcus Semien belongs in the MVP discussion," 21 Sep. 2019 Just as blisters are badges of honor for distance runners, callused fingers become a rite of passage for any climber. Jen Murphy, WSJ, "Forget Your Washboard Abs, the Hottest Workout Is for Your Fingers," 28 Nov. 2018 Kendall Jenner likes tiny fish chomping at her callused feet. Samantha Sasso,, "The Secret To Cate Blanchett's Glowing Skin Is X-Rated," 14 Mar. 2018 Over the years, the Iditarod Trail Sled Dog Race has left Lanier callused, frostbitten, broken and bruised. Tegan Hanlon, Anchorage Daily News, "The Iditarod gave this musher broken bones and frostbitten toes. At 77, he’s not ready to stop racing.," 5 Mar. 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'callus.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of callus


1563, in the meaning defined at sense 1


1824, in the meaning defined at transitive sense

History and Etymology for callus



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Statistics for callus

Last Updated

8 May 2021

Cite this Entry

“Callus.” Dictionary, Merriam-Webster, Accessed 15 May. 2021.

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More Definitions for callus



English Language Learners Definition of callus

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


cal·​lus | \ ˈka-ləs How to pronounce callus (audio) \
plural calluses

Kids Definition of callus

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


cal·​lus | \ ˈkal-əs How to pronounce callus (audio) \

Medical Definition of callus

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

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