| Acronym | Meaning |
| IAT | Island Arc Tholeiite |
| LOI | Limiting Oxygen Index [of Fire Retardant] |
| NAEG | Nevada Applied Ecology Group (of US Department Of Energy) |
| TPSSIMS | Temperature Programmed Static Secondary Ion Mass Spectrometry |
| BHTV | Borehole Televiewers |
| PAO | Pseudo-atomic Orbital |
| QBO | Quasi-biennial Oscillation (atm.) |
| ISEC | Inverse Steric Exclusion Chromatography |
| IDF | International Dairy Federation |
| SCM | Self-consistent Multipolar (method In Metal Cluster Calcns.) |