| Acronym | Meaning |
| ECF | Electric Crystal Field |
| IGFA | Inert Gas Fusion Analysis |
| PCCI | Premixed Charge Compression Ignition |
| SCIA | Semiclassical Impact Approxn. (in Ionizing At. And Mol. Collision Calcns.) |
| TRE | Toxicity Reduction Evaluation |
| OCPSF | Organic Chemical, Plastics, And Synthetic Fiber Industry |
| NGPSA | Natural Gas Pipeline Safety Act |
| MOR | Mid-ocean Ridge |
| BICMOS | Bipolar Complementary Metal Oxide Semiconductor |
| UOVMO | Unoccupied Valence-type Mol. Orbital |