| Acronym | Meaning |
| SU-MRCC | State Universal-multireference Coupled Cluster |
| XC | Exchange-coulomb Potential |
| PPCP | Pharmaceuticals And Personal Care Products |
| LGM | Last Glacial Maximum (most Recent Era Of Continental Glaciation; See Also PGP) |
| CDD | Chlorinated Dibenzo-p-dioxin |
| ATRP | Atom Transfer Radical Polymerization |
| FO-ECP | Frozen Orbital-effective Core Potential |
| PPS | Poly (phenylene Sulfide) |
| PGM | Platinum-group Metals |
| ACOP | Approved Code Of Practice (UK) |