| Acronym | Meaning |
| NAI | Neutral Atom Imaging (astronomical Plasmas) |
| LSR | Liquid Silicone Rubber |
| DDLS | Depolarized Dynamic Light Scattering |
| TPPE | Two-photon Photoemission |
| PSES | Pretreatment Standards For Existing Sources |
| TCDFT | Two-component Density Functional Theory |
| PERL | Passivated Emitter And Rear Locally Diffused (solar Cells) |
| QDPT | Quasi-degenerate Perturbation Theory |
| NDF | Neutral Detergent Fiber |
| SS | Suspended Solids |