| Acronym | Meaning |
| TNBS | Trinitrobenzene Sulfonic Acid |
| PWG SCF | Plane-wave Gaussian Self-consistent Field Method |
| OAP | Optical Atom Probe |
| OC | Office Of The Comptroller |
| GRAPE | Gamma Ray Attenuation Porosity Evaluator |
| DSPB | Distorted-wave Strong-potential Born (approxn.) |
| LFT | Liver Function Test |
| D.I. | Direct Injection [of Diesel Engines] |
| ALAP | As Low As Practical |
| HAPEX | Hydrological And Atmospheric Pilot Experiment |