| Acronym | Meaning |
| OCC | Organochlorinated Compound |
| RCP | Reciprocal Calcn. Procedure [of ACGIH] |
| LMDPE | Linear Medium Density Polyethylene |
| I-TE | International Toxicity Equiv. |
| LO | Localized Orbital |
| ESES | Environmental Sampling Expert System |
| CSAAS | Continuum Source Atomic Absorption Spectrometry |
| RXTE | Rossi X-ray Timing Explorer |
| CE | Capillary Electrophoresis |
| QUAL2E | Enhanced Stream Water Quality Model |