TERMIUM Plus®

The Government of Canada’s terminology and linguistic data bank.

CALLUS FORMATION [5 records]

Record 1 2012-10-22

English

Subject field(s)
  • Plant Biology
  • Biotechnology
DEF

An unorganized, proliferative mass of undifferentiated plant cells; a wound response.

OBS

In tissue culture, callus formation from explants is occasionally spontaneous, representing an extension of the wound reaction, but to come about generally requires an auxin in the medium often, in combination with a cytokinin.

French

Domaine(s)
  • Biologie végétale
  • Biotechnologie
DEF

Masse formée par le développement explosif et inorganisé de nombreuses cellules indifférenciées (dans les techniques de micropropagation des plantes). [définition normalisée par l'AFNOR.]

OBS

cal : terme normalisé par l'AFNOR.

Spanish

Campo(s) temático(s)
  • Biología vegetal
  • Biotecnología
DEF

Masa no organizada de células diferenciadas y no diferenciadas que se divide activamente a consecuencia de una herida o bien en un cultivo de tejido mantenido en un medio provisto de factores de crecimiento.

Save record 1

Record 2 2012-03-01

English

Subject field(s)
  • Radiography (Medicine)
  • Musculoskeletal System
  • Bones and Joints
DEF

A bony defect which in roentgenograms has the appearance of an incomplete fracture with associated periosteal reaction and callus or new bone formation, sometimes observed in osteomalacia.

French

Domaine(s)
  • Radiographie (Médecine)
  • Appareil locomoteur (Médecine)
  • Os et articulations
DEF

Image radiologique de certaines maladies osseuses dont l'aspect ressemble à une fracture.

Spanish

Save record 2

Record 3 2003-05-29

English

Subject field(s)
  • Embryology
  • Biotechnology
DEF

A tight group of meristematic cells characterized by their small size, dense cytoplasm, prominent nuclei and involved in the formation of organized structures in callus.

French

Domaine(s)
  • Embryologie
  • Biotechnologie
DEF

Structure comparable à un méristème mais non structurée et souvent anormale. On observe des méristémoides qui peuvent évoluer en méristèmes de tiges ou de racines, mais qui peuvent également se multiplier précocement en formant des amas, ou encore régresser en cal en se fusionnant.

Spanish

Campo(s) temático(s)
  • Embriología
  • Biotecnología
Save record 3

Record 4 1993-11-15

English

Subject field(s)
  • Plant Biology
  • Biotechnology
OBS

e.g. in plant tissue culture techniques.

French

Domaine(s)
  • Biologie végétale
  • Biotechnologie
DEF

Néoformation d'un cal.

Spanish

Save record 4

Record 5 1988-05-17

English

Subject field(s)
  • Bones and Joints
DEF

A symptomatic fracture that is not visible radiographically until callus formation or bone resorption is seen more than two weeks after the onset of symptoms.

French

Domaine(s)
  • Os et articulations
CONT

Fracture latente de l'apophyse odontoïde. Présentation d'un cas. (Source: base de données PASCAL).

Spanish

Save record 5

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