| Acronym | Meaning |
| VACSY | Variable-angle Correlation Spectroscopy |
| TC-GME | Time-convolution Generalize Master Equation (in Quantum Tunneling Calcns.) |
| TTHM | Total Trihalomethane |
| SRIM | Structural Reaction Injection Molding |
| IPN | Interpenetrating Polymer Network |
| ELRA | Enzyme-linked Receptor Assay |
| AAR | Association Of American Railroads |
| PSRG | Position-space Renormalization Group (for D.-of-states Calcns.) |
| CD ROM | Compact Disk Read Only Memory |
| GPD | Gallons Per Day |