| Acronym | Meaning |
| RTDM | Rough Terrain Dispersion Model (air Quality) |
| GAIM | Global Analysis Interpretation And Modeling |
| OSWER | Office Of Solid Waste And Emergency Response (USEPA) |
| BESOI | Bonded And Etched-back Silicon-on-insulator |
| DFB | Distributed Feedback |
| LC | Lethal Concentration |
| PGP | Previous Glacial Period (glacial Maximum Of O18 Stage 6; Predates The LGM) |
| RCP | Recursive Correlation Partitioning |
| RMPM | Renormalized Multicenter Potential Model (for Scattering) |
| GRWA | Generalized Rotating-wave Approxn. (in Energy Level Calcns.) |