| Abbreviation | Definition |
|---|---|
| HIC | Hydrogen Induced Cracking |
| HIKE | Heart Intensive Kinetic Energy |
| HIP | Hot Isostatic Press |
| HIP | Hot Isostatic Process |
| HIP | Hot Isostatic Processing |
| HIPA | High Intensity Proton Accelerator |
| HIPD | High-Intensity Powder Diffractometer |
| HIPE | Helium Image Processing Engine |
| HIR | Halogen Infra Red |
| HIRES | High Resolution Echellle Spectrometer |
| HISR | Heavy Ion Storage Ring |
| HK | Hybrid Kinetic |
| HKEC | Hydraulic Kinetic Energy Conversion |
| HL | Heat Loss |
| HLBC | Heavy Liquid Bubble Chamber |
| HLBL | Hadronic Light-By-Light scattering |
| HLC | Holographic Label Converting |
| HLH | Helix Loop Helix |
| HLM | Hierarchical Linear Modeling |
| HMD | Hyper-Magnetization Device |