| Acronym | Meaning |
| HASI | Huygens Atmospheric Structure Instrument |
| ISH | In Situ Hybridization |
| CLEA | Collection Of Laws For Electronic Access |
| HCA | Hazardous Communication Act |
| SDA | Subsurface Disposal Area |
| FLAA | Flame Atomic Absorption |
| ECS | Energy-corrected Sudden (scaling Theory In Mol. Collisions) |
| CSPI | Coherent State Path Integration |
| OBK3 | Third-order Oppenheimer-Brinkman-Kramers |
| CGC | Capillary Gas Chromatography |