| Acronym | Meaning |
| HMBC | Heteronuclear Multiple-bond Correlation |
| IHO | International Hydrographic Association |
| LRO | Long Range Order |
| ERDA | Elastic Recoil Detection Analysis |
| HSC | Hematopoietic Stem Cells |
| MORASS | Multiple Overhauser Relaxation AnalysiS And Simulation |
| ICC | Interstate Commerce Commission |
| MBE | Many-body Expansion (in Mol. Potential Energy Surface Calcn.) |
| APD | Avalanche Photodiode |
| RVP | Reid Vapor Pressure (used For Gasoline Volatility) |