callus

cal·lus  (kls)

n. pl. cal·lus·es

1.

a. A localized thickening and enlargement of the horny layer of the skin. Also called callosity.

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

2. Botany

a. Undifferentiated tissue that develops on or around an injured or cut plant surface or in tissue culture.

b. The hardened, sometimes sharp base of the floret of certain grasses.

intr.v. cal·lused, cal·lus·ing, cal·lus·es

To form or develop such hardened tissue. See Usage Note at callous.

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[Latin, masculine of callum.]

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callus [ˈkæləs]

n pl luses

1. (Medicine / Pathology) 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. (Medicine / Pathology) an area of bony tissue formed during the healing of a fractured bone

3. (Life Sciences & Allied Applications / Botany) Botany

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

b.  an accumulation of callose in the sieve tubes

4. (Earth Sciences / Geological Science) Biotechnology a mass of undifferentiated cells produced as the first stage in tissue culture

vb

(Life Sciences & Allied Applications / Botany) to produce or cause to produce a callus

[from Latin, variant of callum hardened skin]

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callus  (kls)

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.

Thesaurus

Noun	1.	callus - an area of skin that is thick or hard from continual pressure or friction (as the sole of the foot) callosity hardening - abnormal hardening or thickening of tissue clavus, corn - a hard thickening of the skin (especially on the top or sides of the toes) caused by the pressure of ill-fitting shoes
	2.	callus - bony tissue formed during the healing of a fractured bone chestnut - a small horny callus on the inner surface of a horse's leg cicatrice, cicatrix, scar - a mark left (usually on the skin) by the healing of injured tissue
	3.	callus - (botany) an isolated thickening of tissue, especially a stiff protuberance on the lip of an orchid phytology, botany - the branch of biology that studies plants plant process, enation - a natural projection or outgrowth from a plant body or organ
Verb	1.	callus - cause a callus to form on; "The long march had callused his feet" harden, indurate - make hard or harder; "The cold hardened the butter"
	2.	callus - form a callus or calluses; "His foot callused" harden, indurate - become hard or harder; "The wax hardened"

Translations

callus

n (Med) → Schwiele f; (of bone) → Kallus m, → Knochenschwiele f; (Bot) → Wundholz nt, → Kallus m