| Acronym | Meaning |
| RIOSA | Reactive Infinite-order Sudden Approxn. |
| DIMZO | Diatomics-in-molecules Zero-overlap |
| PAGIRS | Pesticide Assessment Guidelines Information Retrieval System |
| CLL | Chronic Lymphocytic Leukemia |
| FPC | Fish Protein Concentrate |
| BEKP | Backscattered Electron Kikuchi Pattern |
| LH | Luteinizing Hormone |
| MAHRSI | Middle Atmosphere High Resolution Spectrograph Investigation |
| MRDL | Maximum Residual Disinfectant Level |
| CNDO | Complete Neglect Of Differential Overlap |