| GM- | gram-negative |
|---|---|
| GN | gaze nystagmus; glomerulonephritis; glucose nitrogen [ratio]; gnotobiote; graduate nurse; gram-negat... |
| GNB | ganglioneuroblastoma; gram-negative bacillus; guanine nucleotide-binding [protein] |
| GNBM | gram-negative bacillary meningitis |
| GND | Gram-negative diplococci |