| Abbreviation | Definition |
|---|---|
| GPC | Giant Papillary Conjunctivitis |
| GPPA | Georgia Psychiatric Physicians Association |
| GPR | General Practice Residency |
| GPS | Gastrocnemius-Plantaris-Soleus |
| GPS | GoodPasture Syndrome |
| GPS | Grey Platelet Syndrome |
| GR | Gastric Resection |
| GR | Greater |
| GR | GRoss |
| GR | Gross, Grossly |
| GR | Group |
| GRA | Glucocorticoid Remediable Aldosteronism |
| GRA | Granule |
| GRAMICID | Gramicidin |
| GRAS | Generally Recognized As Safe |
| GRAV | Gravida, A Pregnant Woman |
| GRED | Globe Retropulsion and Eyelid Depression |
| GRH | Gonadotrophin Releasing Hormone |
| GRID | Gradual Retrograde Immune Degeneration |
| GRIDS | Gay Related Immune Deficiency Syndrome |