| Acronym | Meaning |
| OSCCM | Open-shell Coupled-cluster Method (in Electronic Property Calcn.) |
| GTAW | Gas-tungsten Arc Welding |
| LAOES | Laser Ablation Optical Emission Spectroscopy |
| NEMCA | Non-faradaic Electrochemical Modification Of Catalytic Activity |
| AO | Office Of The Administrator |
| FBEM | Fixed Beam Electron Microscopy |
| HPAE | High Performance Anion Exchange |
| EUVL | Extreme Ultraviolet Lithography |
| PNDDO | Partial Neglect Of Diatomic Differential Overlap |
| IPA | International Pharmaceutical Abstracts |