| Acronym | Meaning |
| RPTP | Receptor Protein Tyrosine Phosphatase |
| AFPR | Alliance Of Foam Packaging Recyclers |
| MCS | Media Cleanup Standard |
| DRIFT | Diffuse Reflectance IR Fourier Transform |
| DPA | Dipicolinic Acid |
| BHF | Broken-symmetry Hartree-Fock |
| ASM | Activated-sludge Model |
| HLG | Hedin-Lundqvist-Gunnarsson (spin D. Functional) |
| GLE | Generalized Langevin Equation |
| CNDO/IP | Complete Neglect Of Differential Overlap/ionization Potential |