| Acronym | Meaning |
| SCCF | Self-consistent Continued Fraction |
| SCC-IEH | Self-consistent Charge-iterative Extended Hueckel |
| SSAO | Semicarbazide-sensitive Amine Oxidase |
| NARE | North Atlantic Regional Experiment |
| SLD | Superluminescent Diode |
| SCCO2 | Supercritical Carbon Dioxide |
| IAPSO | International Association For The Physical Sciences Of The Ocean (ICSU) |
| INQUA | International Association For Quaternary Research |
| QTOF | Quadrupole Time-of-flight |
| ACH | Air Changes Per Hour |