| Acronym | Meaning |
| GUS | Groundwater Ubiquity Score |
| RPE | Retinal Pigment Epithelium |
| HEMT | High Electron Mobility Transistor |
| NESCAUM | North East States Coalition For Air Use Management |
| HDF | Hubble Deep Field |
| AOT | Aerosol OT (surfactant) (reg: 577117) |
| AJCC | American Joint Committee On Cancer |
| APUHF | Approximately Projected Unrestricted Hartree-Fock |
| NASD | National Ag Safety Database |
| SMAW | Shielded Metal Arc Welding |