| Acronym | Meaning |
| ASX | Aluminosilicate Xerogel |
| NAI | Neutral Atom Imaging (astronomical Plasmas) |
| SAXRD | Small-angle X-ray Diffraction |
| EDWA | Exponential Distorted-wave Approxn. (atom-ion Electron-exchange Calcns.) |
| SCOR | Scientific Committee On Ocean Research |
| EGR | Exhaust Gas Recirculation |
| IWOP | Integration Within (an Ordered Product Of) Operators |
| HCF | High-cycle Fatigue |
| SAWD | Solid Amine Water Desorbed |
| HQE | Hemiquantal Equations |