| Acronym | Meaning |
| CBS-QCI | Complete Basis Set-quadratic Configuration Interaction |
| AIHC | American Industrial Health Council |
| APL | Acute Promyelocytic Leukemia |
| PFA | Principal Factor Analysis |
| EORCU | European Ozone Research Coordinating Unit |
| ONBI | Oligonucleotide Bridge Intercalator |
| ASAE | Alkali-sulfite-anthraquinone-ethanol (pulping Process) |
| VBCI | Valence Bond Configuration Interaction |
| TSP | Total Suspended Particles |
| PORG | Photochemical Oxidants Review Group |