| Acronym | Meaning |
| CATC | Cyanide Amenable To Chlorination |
| ATLL | Adult T-cell Leukemia Lymphoma |
| BOC | Bond-order Conservation (model In Calcns. On Reactions) |
| CRC | Colorectal Cancer |
| RIR | Reference-intensity Ratio |
| LSD | Lysergic Acid Diethylamide |
| EELS | Electron Energy Loss Spectroscopy |
| MW | Molecular Weight |
| PHT | Pulmonary Hypertension |
| QSO | Quasistellar Objects |