callus

American  

[kal-uhs] / ˈkæl əs /

noun

plural

calluses

1. Pathology, Physiology.

   1. a hardened or thickened part of the skin; a callosity.

   2. a new growth of osseous matter at the ends of a fractured bone, serving to unite them.

2. Botany. Also

   1. the tissue that forms over the wounds of plants, protecting the inner tissues and causing healing.

   2. a deposit on the perforated area of a sieve tube.

   3. (in grasses) a tough swelling at the base of a lemma or palea.

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verb (used without object)

callused, callusing

1. to form a callus.

verb (used with object)

callused, callusing

1. to produce a callus or calluses on.

   Heavy work callused his hands.

callus British  

/ ˈkæləs /

noun

1. 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

2. an area of bony tissue formed during the healing of a fractured bone

3. botany

   1. a mass of hard protective tissue produced in woody plants at the site of an injury

   2. an accumulation of callose in the sieve tubes

4. biotechnology a mass of undifferentiated cells produced as the first stage in tissue culture

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verb

1. to produce or cause to produce a callus

callus Scientific  

/ kăl′əs /

1. An area of the skin that has become hardened and thick, usually because of prolonged pressure or rubbing.

2. The hard bony tissue that develops around the ends of a fractured bone during healing.

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Other Word Forms

• uncallused adjective

Etymology

Origin of callus

First recorded in 1555–65; from Latin callus, masculine variant of callum “tough skin, any hard substance”; callous

Example Sentences

But the paintbrush rubbing against the calluses on your palms calls you back to the bar.

From Literature

"Our final, clear polish could be put over any manicure or even bare nails, which could help people with calluses on their fingertips, too. So, it has both a cosmetic and lifestyle benefit," explains Desai.

From Science Daily

She was found with large calluses on her feet and ankles from constantly being on her hands and knees cleaning floors.

From BBC

He had clean, clipped nails, and calluses along his fingers, probably from working on the house with his dad.

From Literature

They were rough, with calluses from sewing, burns from ironing, cuts from slicing potatoes.

From Literature