| Acronym | Meaning |
| HMIS | Hazardous Material Identification System |
| ACR | Advanced Cracking Reactor (for Ethylene Production From Petroleum) |
| AE | Acoustic Emission |
| HSA | Human Serum Albumin |
| HER2 | Human Epidermal Growth Factor Receptor 2 |
| HCSEL | Horizontal Cavity Surface Emitting Laser |
| CCWP | Close-coupling Wave-packet (for Mol. Scattering) |
| BTB | Bromothymol Blue |
| TTP | Tocopherol Transfer Protein |
| ANA | Adiabatic Nuclei Approximation (in Electron-mol. Scattering) |