| Acronym | Meaning |
| SPA | Shielded-potential Approxn. (in Electronic Structure) |
| RQCISD | (spin) Restricted QCISD |
| LBP | Lipopolysaccharide-binding Protein |
| LTER | Long Term Ecological Research |
| RISA | Radioimmunosorbent Assay |
| TDL | Tunable Diode Laser |
| PSU | Practical Salinity Units |
| COMFA | Comparative Molecular Field Analysis |
| SALI | Secondary Atom Laser Ionization |
| UNCED | United Nations Conference On Environment And Development |