| Acronym | Meaning |
| GEO | Geostationary Earth Orbit |
| PROC | Photochemically Reactive Organic Compound(s) |
| AAFEB | Anaerobic Attached Film Expanded Bed |
| PTO | U.S. Patent And Trademark Office |
| AIR | Aerosol Ionic Redistribution |
| VU-CCSD/R | Valence Universal-coupled Cluster (with) Single (and) Double (excitations) (r = Radial Components Of The Cluster Amplitudes) |
| CV | Cyclic Voltammetry |
| ZDC | Zero-degree Calorimeter |
| SCC | Standards Council Of Canada |
| NPR | Net Protein Retention |