| Acronym | Meaning |
| LCBO | Linear Combination Of Bonding Orbitals |
| EPI | Electronic Patent Index |
| TCL-GME | Time-convolutionless Generalized Master Equation (in Quantum Tunneling Calcns.) |
| IID | Ion Impact Desorption |
| TBT | Tributyl Tin |
| MLD | Metachromatic Leukodystrophy |
| NASDA | National Space Development Agency Of Japan |
| PAZ | Protective Action Zone |
| COA | Coenzyme A |
| ACS | Adiabatically Corrected Sudden |