| Acronym | Meaning |
| ERC | Emissions Reduction Credit |
| CBOA | Crude Born-Oppenheimer Approximation |
| TDCC | Time-dependent Close-coupling |
| ECCS | Emergency Core Cooling System |
| HFP | Hartree-Fock Perturbation |
| RDNP | Reverse Differential Normal Pulse |
| SERODS | Surface-Enhanced Raman Optical Data Storage |
| SNR | Signal-to-noise Ratio |
| HRELS | High-resolution Electron Energy-loss Spectroscopy |
| LCDA MO | Linear Combination Of Donor-acceptor Molecular Orbital Theory |