Definitions for callusˈkæl əs
Random House Webster's College Dictionary
(n.)a hardened or thickened part of the skin; callosity. a new growth of osseous matter at the ends of a fractured bone, serving to unite them.
Category: Pathology, Physiology
the tissue that forms over the wounds of plants, protecting the inner tissues and causing healing.
Ref: Also, callose.
(v.i.)to form a callus.
(v.t.)to produce a callus or calluses on.
Origin of callus:
1555–65; < L
an area of skin that is thick or hard from continual pressure or friction (as the sole of the foot)
bony tissue formed during the healing of a fractured bone
(botany) an isolated thickening of tissue, especially a stiff protuberance on the lip of an orchid
cause a callus to form on
"The long march had callused his feet"
form a callus or calluses
"His foot callused"
A hardened area of the skin (especially on the foot or hand) caused by repeated friction, wear or use.
To form such hardened tissue
same as Callosity
the material of repair in fractures of bone; a substance exuded at the site of fracture, which is at first soft or cartilaginous in consistence, but is ultimately converted into true bone and unites the fragments into a single piece
the new formation over the end of a cutting, before it puts out rootlets