| Acronym | Meaning |
| RFC | Inhalation Reference Concentration |
| FOPIM | First Order Perturbation Iteration Method |
| APES | Atomic Plasma Emission Spectroscopy |
| VASE | Variable Angle Spectroscopic Ellipsometry |
| SD-POE | Sigma-dependent Pi-orbital Electronegativity Model |
| IAQP | Indoor Air Quality Program |
| BIOS | Biological Innovation For Open Society |
| CAAMP | Canadian Acid Aerosol Measurement Program |
| UF | Uncertainty Factor (in Oral RfD) |
| SLIME | Spin-locked Inversion Mid-echo |