| Acronym | Meaning |
| PCS | Permit Compliance System |
| OCTS | Ocean Color And Temperature Sensor |
| CEDIA | Cloned-enzyme Donor Immunoassay |
| IEM | Interstitial Electron Model |
| NET | Norepinephrine Transporter |
| EARTOF | Energy And Angle Refocusing Time-of-flight Mass Spectrometry |
| CERL | Corvallis Environmental Research Laboratory |
| SPEAR | Stanford Positron Electron Accelerating Ring |
| CPP | Core Polarization Potential |
| PCP | Pentachlorophenol (Reg: 87865) |