| Acronym | Meaning |
| PRESS | Point Resolved Spectroscopy |
| CCFO | Charge-charge Flux Overlap (model In Mol.-property Calcns.) |
| RCC | Relativistic Coupled Cluster |
| NMC | New Muon Collaboration |
| HESP | Human Exposure To Soil Pollutants |
| UOP | Universal Oil Products |
| ESID | Environmental Statistics And Information Division |
| QWIP | Quantum Well IR Photodetector |
| TTL | Transistor-transistor Logic |
| EROD | Ethoxyresorufin-O-deethylase (REG 59793-97-4) |