| Acronym | Meaning |
| (PI)SDCI | (pi)-electron Singly And Doubly Excited CI |
| PSI | Pollution Standard Index |
| ANRHRD | Air Noise Radiation Health Research Division |
| LASE | Lidar Atmospheric Sensing Experiment |
| MIMAS | MIcronization And MASter Blend |
| DAA | Days After Anthesispar |
| ETD | Enhanced Trickle Down (watershed Acidification Model) |
| TFTR | Tokamak Fusion Test Reactor |
| PIAS | Photon-counting Image Acquisition System |
| FWHP | Full Width At Half Peak |