| Acronym | Meaning |
| MSD | Mean Square Displacement |
| OPO | Optical Parametric Oscillator |
| IAVI | International AIDS Vaccine Initiative |
| ODLRO | Off-diagonal Long-range Order |
| QRM | Quadratic Rubinow Method (variational Method For Scattering) |
| USDA | United States Department Of Agriculture |
| TSM | Thickness Shear Mode |
| FCD | Fault Consequence Digraph |
| SCAG | Southern California Association Of Governments |
| LFC | Lowest Feasible Concentration |