| Acronym | Meaning |
| PDR | Photon-dominated Region |
| CHICO | Compact Heavy-ion Counter |
| APECS | Auger Photoelectron Coincidence Spectroscopy |
| MUCS | Minimum-uncertainty Coherent States (wave Functions) |
| VDU | Visual Display Unit |
| ERD | Emergency Response Division |
| ICMA | Immunochemiluminometric Assay |
| DSP | Densified With Small Particles |
| ISGF | Interferon-stimulated Gene Factor |
| AFBS | Anaerobic Fluidized Bed Systems |