| Acronym | Meaning |
| METAALICUS | Mercury Experiment To Assess Atmospheric Loading In Canada And The US |
| DAC | Derived Air Concentration |
| AWS | American Welding Society |
| ELO | Edge Localized Orbital |
| ETBM | Empirical Tight-binding Method (in Electronic Structure Calcn.) |
| HMM | Heavy Meromyosin |
| DQMC | Diffusion Quantum Monte Carlo (method In Atom And Mol. Calcns.) |
| HAB | High-Alumina Basalt |
| AQL | Acceptable Quality Levels |
| BLS | Bureau Of Labor Statistics |