| Acronym | Meaning |
| URV | Unit Risk Value |
| AOES | Actinometry Optical Emission Spectroscopy |
| LDAR | Leak Detection And Repair |
| VCSEL | Vertical Cavity Surface Emitting Laser |
| HPA | Hybridization Protection Assay |
| NEDOR | Nuclear Electron Double Resonance |
| TMC | Titanium Matrix Composite |
| HNFETB | Hybridization Of Nearly Free Elctrons With Tightly Bound States (for Band-structure Calcns.) |
| HSEOS | Hard-sphere Equation Of State |
| IAP | Indoor Air Pollution |