| Acronym | Meaning |
| PGE | Prostaglandin E |
| SSTI | Small System Technol. Initiative (USEPA) |
| SSD | Solid State Detector |
| FROG | Frequency-resolved Optical Grating |
| ACPR | Annular Core Pulse Reactor |
| MRNA | Messenger Ribonucleic Acid |
| VLHC | Very Large Hadron Collider |
| SSF | Space Station Freedom |
| TOCOEN | Toxic Organic Compounds In The Environment (research Project In Czechoslovakia) |
| HKS | Hohenberg-Kohn-Sham (quantum Theory) |