| Acronym | Meaning |
| VX | O-ethyl-S-2-diisopropylaminoethyl Methylphosphonothiolate |
| PANH | Polycyclic Aromatic Nitrogen Heterocycle |
| IPS | Inclined Plate Settler (for Wastewater Treatment) |
| DIERS | Design Institute For Emergency Relief Systems (AIChE) |
| PEEM | Photoemission Electron Microscopy |
| RUSLE | Revised Universal Soil Loss Equation (erosion Model) |
| EFOIA | Electronic Freedom Of Information Act |
| LIGO | Laser-interferometer Gravitational-wave Observatory |
| RDI | Reference Daily Intake |
| GDA | Glow Discharge Atomization (for Atomic Absorption Spectrometry) |