| Acronym | Meaning |
| CREB | CAMP-responsive Element-binding |
| TCEQ | Texas Commission On Environmental Quality |
| RIOMETER | Relative Ionospheric Opacity Meter |
| SEPT | Secular Equation (with) Perturbation Theory |
| LAAFS | Laser Ablation Atomic Fluorescence Spectroscopy |
| GSNO | Ground-state Natural Orbital |
| PCPI | Permanent Committee On Patent Information |
| ASM | American Society For Metals |
| APSIS | Athenian Photochem. Smog Intercomparison Of Simulations |
| WMT | Warped Muffin-tin Approximation |