Callusing

Pathology, Physiology.

a hardened or thickened part of the skin; a callosity.
a new growth of osseous matter at the ends of a fractured bone, serving to unite them.

Also, callose. Botany.

the tissue that forms over the wounds of plants, protecting the inner tissues and causing healing.
a deposit on the perforated area of a sieve tube.
(in grasses) a tough swelling at the base of a lemma or palea.

to form a callus.
to produce a callus or calluses on:
Heavy work callused his hands.
Historical Examples

Manual of American Grape-Growing U. P. Hedrick
The Nursery Book Liberty Hyde Bailey
The Nursery Book Liberty Hyde Bailey
Manual of American Grape-Growing U. P. Hedrick

noun (pl) -luses
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
an area of bony tissue formed during the healing of a fractured bone
(botany)

a mass of hard protective tissue produced in woody plants at the site of an injury
an accumulation of callose in the sieve tubes

(biotechnology) a mass of undifferentiated cells produced as the first stage in tissue culture
verb
to produce or cause to produce a callus
n.

callus
(kāl’əs)