| Acronym | Meaning |
| ERL | Environmental Research Laboratory |
| SLE | Solid-liquid Equilibria |
| FPC | Fractional Parentage Coeff. (in Group-theor. Calcns.) |
| ALR | Augmenter Of Liver Regeneration |
| AFA | Abstract Factor Anal. (statistics) |
| CDHR | Center For Devices And Radiological Health |
| BFFAR | Benthic Foraminifera Accumulation Rate |
| INEGA | Instituto Nacional De Estadistica |
| PTR-MS | Proton Transfer Reaction-mass Spectrometry |
| APWA | American Public Works Association |