| Acronym | Meaning |
| IERM | Intermediate Energy R-matrix (theory In Scattering Calcns.) |
| CCQC | Center For Computational Quantum Chemistry |
| AFBBR | Anaerobic Fluidized Bed Biofilm Reactor |
| CIOS | Corrected Infinite-order Sudden (approxn In Mol. Collisions) |
| PMA | Phorbol Myristate Acetate |
| APNO | Atomic Pair Natural Orbital |
| CFO | Crystal Field Orbital |
| HFRR | High Frequency Reciprocating Rig |
| LDPE | Low Density Polyethylene |
| IMAPS | Interstellar Medium Absorption Profile Spectrograph |