| Acronym | Meaning |
| SCAQMD | South Coast Air Quality Management District |
| TTHM | Total Trihalomethane |
| IRI | International Reference Ionosphere |
| DTMR | Diffusion Tensor Magnetic Resonance |
| CTC | Control Technology Center |
| AFC | Antibody Forming Cell |
| DWEL | Drinking Water Equivalent Level |
| MWNT | Multiwall Nanotube |
| RIP | Rapid Isothermal Processing |
| NETD | Noise Equiv. Temp. Difference |