| Acronym | Meaning |
| HLRW | High Level Radioactive Waste |
| JJT | Josephson Junction Transistor |
| FOMBT | First-order Many-body Theory |
| PCL | Phase Conjugate Laser |
| LGM | Last Glacial Maximum (most Recent Era Of Continental Glaciation; See Also PGP) |
| IGFA | Inert Gas Fusion Analysis |
| GIAO | Gage Invariant Atomic Orbital |
| SCSRC | Solids Contact Slurry Recirculating Clarifier(s) |
| ZSM | Zeolite Socony Mobil |
| RIBE | Reactive Ion Beam Etching |