| Acronym | Meaning |
| IGBP | International Geosphere Biosphere Programme |
| TIGER | Technique For Importing Greater Evolution Resolution In Multidimensional NMR |
| ULDPE | Ultra Low Density Polyethylene |
| ELH | Egg-laying Hormone |
| FIP | Full Intra-pair (spin-coupling) (wave Function) |
| STEM | Scaled Taylor Exponential Model |
| TDCC | Time-dependent Close-coupling |
| APYS | Auger-electron Partial Yield Spectroscopy |
| NEO | Near-Earth Objects |
| MRLCC | Multireference Linearized Coupled Cluster |