| Acronym | Meaning |
| UIHRS | Upflow Inclined High-rate Settlers |
| TTO | Transient Tracers In The Ocean |
| LCD | Liquid Crystal Display |
| CFR | Code Of Federal Regulations |
| RRPT | Registered Radiation Protection Technologist |
| WATOC | World Association Of Theoretically Oriented Chemists |
| UAPS | Utility Acid Precipitation Study |
| MUCS | Minimum-uncertainty Coherent States (wave Functions) |
| CTPGF | Closed Time Path Green Function (in Many-body Theory) |
| DVR-REV | Discrete Variable Representation-ray Eigenvector |