| Acronym | Meaning |
| VTST | Variational Transition-state Theory |
| DCPA | Dynamic Coherent Potential Approxn. |
| WMT | Warped Muffin-tin Approximation |
| BNF | Biological Nitrogen Fixation |
| RDQ | Reduced-dimensionality Quantum (calcn. Method) |
| CC | Closed Cup (Flash Point Test Method) |
| MINDO/SR | MINDO S=overlap Integral R=internuclear Distance |
| FIT | Field Investigation Team (US EPA) |
| IAC | Immunoaffinity Chromatography |
| GEP | Good Engineering Practice |