| Acronym | Meaning |
| TOPSE | Tropospheric Ozone Production About The Spring Equinox |
| FCCC | Framework Convention On Climate Change |
| SVOC | Semivolatile Organic Compounds |
| CIPM | Comite International Des Poids Et Mesures |
| RSSC-CPA | Real-space-scattering Cluster Coherent Potential Approxn. |
| NBII | National Biological Information And Infrastructure |
| LAKE | Clean Lakes Database (accessible Through OLS) |
| APIG | Antisymmetrized Product (of) Identical Geminals |
| IUPAB | International Union Of Pure And Applied Biophysics |
| ESE MO | Essential-structure-elements Molecular Orbital |