| Acronym | Meaning |
| FIGLU | Formiminoglutamic Acid |
| OPC | Ordinary Portland Cement |
| ICAC | Institute Of Clean Air Companies |
| DTR | Diffusion Transfer Reversal |
| CEEL | Community Emergency Exposure Level |
| TGVBA | Target Generalized Valence Bond Approximation |
| LHDC | Lube Hydrocracking Distillate Catalyst |
| PSD | Particle Size Distribution |
| AHA | Anterior Hypothalamic Area |
| GSNO | Ground-state Natural Orbital |