| Acronym | Meaning |
| BTEM | Band Target Entropy Minimization |
| ACRS | Applied Computational Research Society |
| MESA | Mesoscale Self-assembly |
| CI | Compression-ignition (engine) |
| OECD | Organization For Economic Cooperation And Development |
| OPGF | One-particle Green Function |
| APTI | Air Pollution Training Institute |
| AASE | Airborne Arctic Stratospheric Expedition |
| NCDS | NASA Climate Data System |
| RAPS | Regional Air Pollution Study |