| Acronym | Meaning |
| IX | Ion Exchange |
| HEPA | High-efficiency Particulate Air Filter |
| PED | Potential Energy Distribution |
| IAC | Impregnated Activated Carbon |
| DTPA | Diethylenetriamine Pentaacetic Acid |
| CICIS | Chemicals In Commerce Information System |
| SCSRC | Solids Contact Slurry Recirculating Clarifier(s) |
| SGFET | Suspended Gate Field-effect Transistor |
| HOMBA | Higher-order Modified Born Approxn. (in Potential Scattering) |
| HETE | High Energy Transient Explorer |