| Acronym | Meaning |
| ELVIS | ELectromagnetic Very Weak Instabilities Saturated |
| DSB | Direct Soundings Broadcast |
| ASTIA | Armed Services Technical Information Agency |
| ETA | A Subsidiary Of Control Data Corporation That Manufactures Supercomputers |
| OMTF | Optical Modulation Transfer Function |
| RTTOV | Rediative Transfer (RT) Model For Television Infrared Orbiting Satellite (TIROS) Operational Vertical Sounder (TOVS) |
| VM/SP | Virtual Machine/System Product |
| MAN | Metropolitan Area Network |
| PP | Parts Per |
| EPRI | Electric Power Research Institute |