| Acronym | Meaning |
| ROC | Receptor-operated Ca2+ Channel |
| TICS | Time Reversal Invariant Closed Shell (type Of Hartree-Fock Wave Function) |
| GRIDS | Geographic Resources Information And Data System |
| ICR | Intelligent Optical Character Recognition |
| DDF | Depth Distribution Function |
| HY-CI | Hylleraas-configuration Interaction |
| EPM | Empirical Pseudopotential Method |
| BIFET | Bipolar Field Effect Transistor |
| GMP | Good Manufacturing Practice |
| ALEX | Aerosol LIDAR Experiment |