| Acronym | Meaning |
| PPO | Poly (phenylene Oxide) |
| MASS | Magic Angle Sample Spinning |
| GO | Gas Oil |
| DSA | Doppler Shift Attenuation |
| SCM | Subsurface Chlorophyll Maximum |
| MGVB | Modified Generalized Valence Bond |
| ELF | Electron Localization Function |
| ZPC | Zero-point (energy) Corrections |
| CNDO/IP | Complete Neglect Of Differential Overlap/ionization Potential |
| MFE | Modulated Free Electron Orbital Method |