| Acronym | Meaning |
| GEH | Generalized Effective Hamiltonian |
| BHTV | Borehole Televiewers |
| PTR | Proton Transfer Reaction |
| AAIP | American Association Of Investigative Pathologists |
| HAT | Humid-air Turbine [cycle] |
| SCC | Standards Council Of Canada |
| CPHF | Coupled Perturbed Hartree-Fock |
| SPM | Suspended Particulate Matter |
| FRCI | Fibrous Refractory Concrete Insulator |
| PIUG | Patent Information Users Group |