| Abbreviation | Definition |
|---|---|
| HML | Hoosier Microbiological Laboratory |
| HMS | Harvard Medical School |
| HMSA | Health Management Statistical Area |
| HNL | Hawkins National Laboratory |
| HNL | Health Network Laboratories |
| HORL | Home Office Reference Laboratory |
| HPF | Health Point Factor |
| HPG | Hydropropyl Guar |
| HPHC | Harmful and Potentially Harmful Constituents |
| HPL | Hewlett Packard Laboratories |
| HPL | Horn Point Laboratory |
| HPL | Human Performance Laboratory |
| HPL | Human Photonics Laboratory |
| HPL | Human Propulsion Laboratories |
| HPLC | high performance liquid chromatography |
| HPLC | high pressure liquid chromatography |
| HPSL | High Performance Systems Laboratory |
| HPTL | High Power Target Laboratory |
| HPTL | High Pressure Tritium Laboratory |
| HR | hazard ratio |