| Acronym | Meaning |
| CHO | Complex Harmonic Oscillator (in Mol. Scattering Theory) |
| PPT-MCF | Pseudo-polarization Tensor-mutually Consistent Field ( For Mol. Interactions) |
| ISG | International Stratigraphic Guide |
| CHES | 3-(cyclohexylamino)ethylsulfonic Acid |
| AGCI | Aspen Global Change Institute |
| GDP | Guanosine 5'-diphosphate |
| AUBF | Anaerobic Upflow Biofilter |
| FIM-APS | Field Ion Microscopy-atom Probe Spectroscopy |
| NF | Nuclear Factor |
| BFU-E | Burst-forming Unit-erythroid |