| Acronym | Meaning |
| FPLH | Free-Phase Liquid Hydrocarbon |
| AIPI | Ab Initio Perturbed Ion (calcn. Method) |
| DE | Dynamics Explorer (spacecraft) |
| TDC | Top Dead Center |
| SNARL | Suggested No-adverse Response Level |
| FBL | Fixed Bed Loop |
| VOF | Volatile Org. Fraction |
| ARS | Autonomously Replicating Sequence |
| PCGVB | Pairwise Correlated Generalized Valence Bond Method |
| LCO | Light Cycle Oil |