| Acronym | Meaning |
| PMP | Peroxisomal Membrane Protein |
| MMP | Matrix Metalloproteinase |
| DDRP | Direct Delayed Response Program (for Long Term Effects Of Acid Rain) |
| RFLP | Restriction Fragment Length Polymorphism |
| BSO | Basic Symmetric Operator (in Second-quantization Calculations) |
| ECFS | Hot And Cold Potable Water (French; L'eau Chaude Et Froide Sanitaire) [a Class Of Pipe Application] |
| ERIIS | Environmental Risk Information And Imaging Services |
| CDHS | California Department Of Health Services |
| ZPL | Zero-phonon Line |
| INMS | Institute For National Measurement Standards |