| Acronym | Meaning |
| HCA | Hierarchical Cluster Analysis |
| BIIR | Brominated Isobutene-isoprene Rubber |
| MCPA | Molecular Coherent-potential Approximation |
| ELCD | Electrolytic Conductivity Detection |
| EFA | Evolving Factor Analysis |
| GDMS | Glow Discharge Mass Spectrometry |
| BAO | Best Atomic Orbital Basis |
| ARNT | Aryl Hydrocarbon Receptor Nuclear Translocator |
| ESE | Exact Static-exchange (approxn. In Scattering Calcns.) |
| LEP | Light Emitting Polymer |