Lexic.us

Definition of Callus

1. Noun. An area of skin that is thick or hard from continual pressure or friction (as the sole of the foot).

2. Verb. Cause a callus to form on. "The long march had callused his feet"

3. Noun. Bony tissue formed during the healing of a fractured bone.

4. Verb. Form a callus or calluses. "His foot callused"

5. Noun. (botany) an isolated thickening of tissue, especially a stiff protuberance on the lip of an orchid.

Definition of Callus

1. n. Same as Callosity

Definition of Callus

1. Noun. A hardened area of the skin (especially on the foot or hand) caused by repeated friction, wear or use. ¹

2. Verb. (intransitive) To form such hardened tissue ¹

¹ Source: wiktionary.com

Definition of Callus

1. to form a hard growth [v -ED, -ING, -ES]

Medical Definition of Callus

1. 1. Undifferentiated plant tissue produced at wound edge callus tissue can be grown in vitro and induced to differentiate by varying the ratio of the hormones auxin and cytokinin in the medium. 2. Mass of new bony trabeculae and cartilaginous tissue formed by osteoblasts early in the healing of a bone fracture. This entry appears with permission from the Dictionary of Cell and Molecular Biology (11 Mar 2008)

Lexicographical Neighbors of Callus

callows calls calls in calls of nature calls off calls out calls to mind calls to order calls up callsign

callsigns calluna callunas callup callups callus (current term) callused calluses callusing callystatin

calm calm air calm as a millpond calm before the storm calm down calm wind calmant calmants calmative calmatives

Literary usage of Callus

Below you will find example usage of this term as found in modern and/or classical literature:

1. Gray's New Manual of Botany: A Handbook of the Flowering Plants and Ferns of by Asa ( Gray, Merritt Lyndon Fernald, Benjamin Lincoln Robinson (1908)
"A difficult genus in which the awns and callus-hairs, although furnishing the most used diagnostic features, are exceedingly variable. ..."

2. General Surgical Pathology and Therapeutics, in Fifty Lectures by Theodor Billroth (1890)
"As previously remarked, the periosteum is used up in the neopla- sia and in ossifying callus, in its place, externally around the callus, ..."

3. Lectures on surgical pathology: Delivered at the Royal College of Surgeons by James Paget, William Turner, Royal College of Surgeons of England (1865)
"That around them, that is, the ensheathing callus, forms most quickly and in greater abundance, and lies chiefly or solely between the wall of the bone and ..."

4. The North American Medical and Surgical Journal (1828)
"At the expiration of ton weeks, the limb was shortened two inches, and the callus augmented to the size of a child's head. He came under the care ofDr ..."

5. Journal of the Royal Microscopical Society by Royal Microscopical Society, London (1882)
"Out of a large number of species examined, Russow found callus- plates in ... In Abies Pichla large callus-cushions were found, composed of radially ..."

6. Lectures on Plant Physiology by Ludwig Jost (1907)
"[This capacity for forming callus disappears in some cases early, ... Small wounds, such as pricks in leaves, may be completely occluded by callus alone, ..."

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