GNR

Abbreviation with 2 meanings

GNR
Stands forGram-negative rods
Meanings2
CategoriesMedical, Military
Also writtenGnr

GNR has two meanings. It stands for Gram-negative rods (infectious disease) or Gunner (british military rank).

Meanings of GNR at a glance

#GNR stands forContext
1Gram-negative rodsMedical › Infectious Disease
2GunnerMilitary › British Military Rank

1. Gram-negative rods

Medical · Infectious Disease Abbreviations

Microbiology description of rod-shaped bacteria that stain pink with Gram stain, including E. coli, Klebsiella, Pseudomonas, Enterobacter and Proteus. A Gram stain reporting GNR in blood allows targeted empiric therapy hours before species identification.

Example: Blood culture: GNR in 1 of 2 sets at 14 hours; start cefepime pending ID and susceptibilities.

Also written GNB (gram-negative bacilli). The stain was developed by Danish physician Hans Christian Gram in 1884. Gram-negative bacteria have an outer membrane that makes many antibiotics less effective. Rapid molecular panels now identify species and key resistance genes directly from positive blood cultures.

2. Gunner (Gnr)

Military · British Military Rank Abbreviations

Private soldiers of the Royal Artillery, Royal Horse Artillery and the artillery of several Commonwealth armies hold this title. Gunners crew field guns, rocket launchers and air defence systems or work in surveillance and target acquisition.

Example: Gnr Patel joined 1st Regiment Royal Horse Artillery after completing training at Larkhill.

The Royal Artillery is itself nicknamed "the Gunners." In the Royal Air Force, members of the RAF Regiment are also informally called gunners. In the Royal Navy and US Marine Corps, gunner historically referred to a warrant officer responsible for ordnance.

More infectious disease abbreviations

  • ESBL – Extended-spectrum beta-lactamase
  • FUO – Fever of unknown origin
  • GAS – Group A Streptococcus
  • GC – Gonococcus (gonorrhea)
  • GPC – Gram-positive cocci
  • H1N1 – Influenza A virus subtype H1N1
  • H5N1 – Influenza A virus subtype H5N1
  • HAART – Highly active antiretroviral therapy

See all 92 infectious disease abbreviations →

More british military rank abbreviations

  • FM – Field Marshal
  • FS – Flight Sergeant
  • Fus – Fusilier
  • Gdsm – Guardsman
  • Gp Capt – Group Captain
  • LAC – Leading Aircraftman
  • LBdr – Lance Bombardier
  • LCpl – Lance Corporal (US Marine Corps)

See all 50 british military rank abbreviations →

Edited by the AbbreviationList.com team. Spotted an error or a missing meaning? Contact us.

This entry is for general education and is not medical advice. Abbreviation use varies between institutions; always confirm in context.