| Acronym | Meaning |
| PA | Photoinduced Absorption |
| MCNDO | Modified Complete Neglect Of Differential Overlap |
| BOP | Basic-O Process |
| PFEO | Perimeter Free Electron Orbital |
| INDA | Investigational New Drug Application |
| AMS | American Mathematical Society |
| SONEX | Subsonic Assessment Ozone And Nitrogen Oxide Experiment |
| FID | Free Induction Decay (Fourier Transform Spectroscopy) |
| FCCC | Framework Convention On Climate Change |
| CCO | Coupled-channel-optical (potential |