| Acronym | Meaning |
| MRCI | Multireference Configuration Interaction |
| PIRL | Polyimide Release Layer |
| IAP | Intermittent Aeration Process (for Waste Treatment) |
| ICOS | Inducible Co-stimulator |
| FPD | Freezing Point Depression |
| EPZ | Emergency Planning Zone |
| BASTE | Bay Area Sewage Toxics Emissions |
| SOA | Secondary Organic Aerosols |
| CMOD | Crack Mouth Opening Displacement |
| MCV | Mesoscale Convective Vortex |