gram-negative

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gram-neg·a·tive

or Gram-neg·a·tive (grăm′nĕg′ə-tĭv)
adj.
Of, relating to, or being a bacterium that does not retain the violet stain used in the Gram stain method.

Gram-negative

adj
(Microbiology) designating bacteria that fail to retain the violet stain in Gram's method

Gram′-neg′ative

(græm)

adj. (often l.c.)
(of bacteria) not retaining the violet dye when stained by Gram's method.
[1905–10]

gram-negative

Relating to a group of bacteria that generally are resistant to the effects of antibiotics or the actions of the body's immune cells. Gram-negative bacteria have relatively thin cell walls and, when subjected to a specialized laboratory staining method, do not change color. Compare gram-positive.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Adj.1.Gram-negative - (of bacteria) being of or relating to a bacterium that does not retain the violet stain used in Gram's method
bacteria, bacterium - (microbiology) single-celled or noncellular spherical or spiral or rod-shaped organisms lacking chlorophyll that reproduce by fission; important as pathogens and for biochemical properties; taxonomy is difficult; often considered to be plants
disconfirming, negative - not indicating the presence of microorganisms or disease or a specific condition; "the HIV test was negative"
Translations

gram-neg·a·tive

n. gram-negativo, resultado de la aplicacion del método de Gram de decoloración de una bacteria o tejido por medio de alcohol.

Gram-negative

adj Gram negativo
References in periodicals archive ?
Contract awarded for gram negative bacteria, reagents for the identification and sensitivity.
The researchers used clinically isolated strains of gram positive (Staphylococcus aureus and Micrococcus luteus) and gram negative bacteria (Escherichia coli and Pseudomonas aeruginosa) to examine the antimicrobial properties of the plant.
The representatives of the second series (lead compound, NAB7061) have only a weak direct action but sensitize in a very remarkable degree these Gram negative bacteria to antibiotics such as macrolides, rifampin, and others.
In Gram negative bacteria, the main signaling molecules are acyl homoserine lactones.
Ionic silver is well accepted as an antiseptic and is a proven broad-spectrum antimicrobial agent that eradicates gram positive and gram negative bacteria including antibiotic-resistant bacteria like methicillin-resistant Staphylococus aureus (MRSA) and Vancomycin-resistant Enterococcus (VRE).
Synergistic interaction of eugenol with antibiotics against gram negative bacteria.