| Acronym | Meaning |
| IAH | International Association Hydrogeologists |
| PBL | Peripheral Blood Lymphocyte |
| GRCDA | Government Refuse Collection And Disposal Association |
| ZORA | Zeroth-order Regular Approximation |
| IPHAS | The INT/WFC Photometric H-alpha Survey Of The Northern Galactic Plane |
| MSP | Manganese Stabilizing Protein |
| NWWA | Northwest Water Authority (UK) |
| CFGFRP | Carbon Fiber And Glass Fiber Reinforced Plastics |
| CVM | Cluster Variation Method (in Calcns. On Semiconductors) |
| WIPO | World Intellectual Property Organization |