| Acronym | Meaning |
| STS | Space Transportation System |
| ECS-P | Energy-corrected Sudden-polynomial (scaling Law) |
| FCCC | Framework Convention On Climate Change |
| HENA | High-energy Neutral Atom |
| PAH | Polycyclic Aromatic Hydrocarbon |
| BCSC | Buried Contact Solar Cell |
| HDI | High-density Inclusion |
| TELS | Transmission Energy Loss Spectroscopy |
| CIBS | Corrections To An Incomplete Basis Set (a Perturbation Theory) |
| NFAIS | National Federation Of Abstracting And Information Services |