| Acronym | Meaning |
| ATDC | After Top Dead Center (gasoline And Diesel Engine Timing) |
| GIC | Graphite Intercalation Compound |
| HEWL | Hen Egg White Lysozyme |
| ISM | Interstellar Medium |
| CFCM | Continuous Feed Completely Mixed Reactor System |
| SAW | Self-avoiding Walk [modeling] |
| APXPS | Appearance Potential X-ray Photoemission Spectroscopy |
| IGAIM | Individual Gages (for) Atoms In Molecules |
| MP2(FC) | MP2(frozen Core) Only (outer) Valence Electrons Included In The Approximation |
| EMAS | Eco-Management & Audit Scheme |