ETYM Latin See Callous.
(Irregular plural: calluses).
In botany, a tissue that forms at a damaged plant surface. Composed of large, thin-walled parenchyma cells, it grows over and around the wound, eventually covering the exposed area.
In animals, a callus is a thickened pad of skin, formed where there is repeated rubbing against a hard surface. In humans, calluses often develop on the hands and feet of those involved in heavy manual work.Growth of healing tissue, also containing blood and bone-forming cells, that forms around the ends of a bone following a fracture. Callus formation is an important factor in the union of the fracture.
1. Bony tissue formed during the healing of a fractured bone.
2. (Botany) An isolated thickening of tissue, especially a stiff protuberance on the lip of an orchid.
1. Durch mechan. Druck hervorgerufene Hornschichtverdickung der Haut, beim Menschen z.B. häufig an Handtellern und Fußsohlen.
2. Bindegewebige Narbe anstelle von untergegangenem Gewebe an inneren Organen, z.B. Herz-Sch. nach Herzinfarkt.
Kallositas, umschriebene Verdickung der Außenhaut oder des Bindegewebes.
1. To cause a callus to form on.
2. To form a callus or calluses.