| Acronym | Meaning |
| AEC | Acceptable Effluent Concentration |
| WLE | Wigner-Liouville Equation (in Study Of Quantum Dynamics) |
| CBA | Chemical Blowing Agent |
| HSLA | High-strength Low-alloy (steel) |
| GFRC | Glass Fiber Reinforced Cement |
| MNDO-PM3 | Modified Neglect Of Diatomic Overlap-parametric Method |
| STAPPA | State And Territorial Air Pollution Program Administrators |
| IPMA | Ion Probe Microanalysis |
| PMP2 | (spin) Projected Moeller-Plesset Second-order (perturbation Theory) |
| NWQMC | National Water Quality Monitoring Council |