TERMIUM Plus®

From: Translation Bureau

On social media

Consult the Government of Canada’s terminology data bank.

COLORANTE GRAM [3 records]

Record 1 2023-03-30

English

Subject field(s)
  • Microbiology and Parasitology
  • Bacterial Diseases
DEF

[Referring] to the inability of a bacterium to resist decolorization with alcohol after being treated with Gram's crystal violet.

CONT

When bacteria are stained with certain basic dyes the cells of ... Gram-negative species ... can be easily decolorized with organic solvents such as ethanol or acetone; cells of Gram-positive species resist decolorization. The ability of bacteria to either retain or lose the stain generally reflects fundamental structural differences in the cell wall, and is an important taxonomic feature ...

French

Domaine(s)
  • Microbiologie et parasitologie
  • Maladies bactériennes
DEF

Se dit d'un microorganisme qui se colore en rose par la coloration de Gram.

CONT

Classification des bactéries en deux grands groupes par la méthode de Gram (bactéries qui retiennent la première coloration et pas la seconde, dites gram-positives; bactéries qui se décolorent à l'alcool et prennent la seconde coloration, dites gram-négatives).

OBS

Dans les adjectifs composés gram-négatif, ive et gram-positif, ive, «gram» prend valeur d'élément de composition, et s'écrit en principe avec la minuscule. Toutefois, certains auteurs conservent l'orthographe Gram-négatif, Gram-positif. L'usage reste flottant en ce qui concerne le trait d'union et l'accord de négatif, positif; [on trouve] de nombreuses variantes (des bactéries gram-négatives, gram négatives, gram négatif, gram-négatif; des microorganismes gram-positifs, gram positifs, gram positif, etc.).

OBS

gram-négatif : Ce terme figure dans l'article «Gram» du Grand Robert électronique DMW.

Spanish

Campo(s) temático(s)
  • Microbiología y parasitología
  • Enfermedades bacterianas
DEF

[Dícese] del germen o bacteria que con la tinción de Gram pierde el colorante básico cristal violeta al ser tratado con alcohol y toma el color rojo de contraste.

Save record 1

Record 2 2008-12-10

English

Subject field(s)
  • Diagnostic Procedures (Medicine)
  • Microbiology and Parasitology
  • Bacterial Diseases
DEF

A method for the differential staining of bacteria by treatment with a watery solution of iodine and the iodide of potassium after staining with a triphenylmethane dye (as crystal violet).

CONT

The Gram staining method ... is one of the most important staining techniques in microbiology. It is almost always the first test performed for the identification of bacteria ... The microorganisms that retain the crystal violet-iodine complex appear purple brown under microscopic examination [and] are commonly classified as gram positive ... Others that are not stained by crystal violet are referred to as gram negative.

French

Domaine(s)
  • Méthodes diagnostiques (Médecine)
  • Microbiologie et parasitologie
  • Maladies bactériennes
DEF

Technique de coloration différentielle distinguant les bactéries Gram-positives et Gram-négatives sur la base de leur capacité à retenir le crystal violet lorsqu'elles sont décolorées à l'aide d'un solvant organique comme l'éthanol.

Spanish

Campo(s) temático(s)
  • Procedimientos diagnósticos (Medicina)
  • Microbiología y parasitología
  • Enfermedades bacterianas
DEF

Método de tinción diferencial de bacterias; los frotis se fijan a la llama, se tiñen con una solución de violeta cristal, se trata con solución de yodo, se lavan, se decoloran y luego se colorean por contraste con safranina O. Los microorganismos grampositivos se tiñen de negro violáceo y los gramnegativos de rosado; es útil en taxonomía e identificación bacteriana y también para indicar diferencias fundamentales en la estructura de la pared celular.

OBS

Yodo de Gram : solución que contiene yodo y yoduro de potasio, usada en el colorante de Gram.

OBS

Colorante de Gram : yodo, 1 g; yoduro potásico, 2 g; agua, 300 ml.

Save record 2

Record 3 2005-02-21

English

Subject field(s)
  • Microbiology and Parasitology
OBS

gram-negative: losing the stain or decolorized by alcohol in Gram's method of staining ...

French

Domaine(s)
  • Microbiologie et parasitologie

Spanish

Campo(s) temático(s)
  • Microbiología y parasitología
DEF

Bacteria que con la tinción de Gram pierde el colorante básico cristal violeta al ser tratada con alcohol y toma el color rojo de contraste.

Save record 3

Copyright notice for the TERMIUM Plus® data bank

© Public Services and Procurement Canada, 2026
TERMIUM Plus®, the Government of Canada's terminology and linguistic data bank
A product of the Translation Bureau

Features

GCtranslate (available on the Government of Canada network only)

Use this artificial intelligence prototype to translate Government of Canada content up to and including Protected B. Available to employees of selected departments and agencies only.

Writing tools

The Language Portal’s writing tools have a new look! Easy to consult, they give you access to a wealth of information that will help you write better in English and French.

Glossaries and vocabularies

Access Translation Bureau glossaries and vocabularies.

Date Modified: