| Acronym | Meaning |
| SEN | Submerged Entry Nozzle |
| NEDO | The New Energy Development Organization (Japan) |
| MSHA | Mine Safety And Health Administration (US) |
| RAPD | Randomly Amplified Polymorphic DNA |
| RR | Round Robin (test) |
| EHS | Environment |
| LCLS | Linac Coherent Light Source |
| RMBPT | Relativistic Many-body Perturbation Theory |
| APAES | Appearance Potential Auger Electron Spectroscopy |
| RACS | Response Action Contractors |