| Acronym | Meaning |
| EBR | Experimental Breeder Reactor |
| GLEAMS | Groundwater Loading Effects Of Agricultural Management Systems |
| CAR | Chemically Amplified Resist |
| IPEM | Ion-photon Emission Microscopy |
| ECI | Size-extensive CI |
| FEI | Fire And Explosion Index |
| CIRRUS-1A | Cryogenic IR Radiance Instrumentation For Shuttle |
| APPI | Atmospheric Pressure Photoionization |
| ORD BBS | ORD Electronic Bulletin Board System |
| CCMC-T2 | Coupled-cluster Multiconfigurational (double-excitation Method With Cluster Operator Approximated By T2) |