| Acronym | Meaning |
| KLN | Potassium Lithium Niobate |
| SCAS | Stability And Command Augmentation System |
| PTH | Parathyroid Hormone |
| PWRI | Public Works Research Institute (Japan) |
| HQM | Hemiquantal Mechanics (in Mol. Calcns.) |
| NVDOC | Non-volatile Dissolved Organic Carbon |
| SOM | Self-organizing Map |
| NCCLS | National Committee For Clinical Laboratory Standards |
| BTDC | Before Top Dead Center |
| STORET | Storage And Retrieval Of U.S. Waterways Parametric Data |