| Abbreviation | Definition |
|---|---|
| HH | Heavy Hole |
| HH | High Heat |
| HH | Hydrostatic Head |
| HIBS | Heavy Ion Backscattering Spectrometry |
| HIC | Hybrid Integrated Circuit |
| HI-FI | High-Fidelity |
| HIGFET | Heterojunction Insulated Gate Field Effect Transistor |
| HILP | High Impact, Low Probability |
| HIM | Human Interface Module |
| HIP | Hard Interlace Picture |
| HIPOX | HIgh-Pressure OXygen |
| HIPPI | High Performance Parallel Interface |
| HIRF | High Intensity Radiated Fields |
| HIT | High Intensity Tungsten |
| HIT | Highly Improved Technology |
| HIVIC | High-Voltage Integrated Circuit |
| HLA | High-Level Analog |
| HLA | Horizontal Line Array |
| HLBM | Harmonics Limited BearingMax filter |
| HLBP | Hierarchical Line Balancing Problem |