| Acronym | Meaning |
| FERC | Federal Energy Regulatory Commission |
| ESP | Exchangeable Sodium Percentage (soils) |
| IRRAS | Integrated Reliability And Risk Analysis System |
| SDRS | Surface Differential Reflectance Spectroscopy |
| TID | Traveling Ionospheric Disturbance |
| LSDXS | Local-spin-density (with) Screened Exchange |
| MOE | Modulus Of Elasticity |
| CSA | Canadian Standards Authority |
| RSM | Rapeseed Meal |
| AAPS | American Association Of Pharmaceutical Scientists |