| Abbreviation | Definition |
|---|---|
| HMT | Hybrid Metamorphose Theory |
| HO | High Order |
| HP | High Pressure |
| HP | High-Powered |
| HP | Horse Power |
| HPBW | Half-Power Beamwidth |
| HPD | Holistic Probabilistic Design |
| Hpewfs | Homemade pyro elecronic wireless firing system |
| HPI | Hybrid Polarization Interferometry |
| HPL | High Pressure Lanes |
| HPL | Hot-electron Photo-Luminescence |
| HPLA | High Power Large Aperture |
| HPLA | Horizontal Plane Large Amplitude |
| HPM | high power microwave |
| HPP | Hydropower Plant |
| HPPT | High Power Physics Testing |
| HPPT | High Pressure Phase Transformation |
| HPPT | High Pressure Physics And Technics |
| HPS | Harrison, Perkins, and Scott |
| HPS | Health Physics Society |