| Acronym | Meaning |
| TRMM | Tropical Rainfall Measuring Mission |
| CMF | Continuous Microfiltration |
| FCP | Function Counterpoise (method For Eliminating Basis Set Superposition Error) |
| CBS-QCI | Complete Basis Set-quadratic Configuration Interaction |
| CTC | Charge-transfer Complex |
| OE | Office Of Enforcement |
| TEDE | Total Effective Dose Equivalent |
| JIS | Japan Industrial Standard |
| TSO | Time Sharing Option |
| IPS | Inclined Plate Settler (for Wastewater Treatment) |