| Acronym | Meaning |
| NSSN | National Standards Systems Network |
| IGAC | International Global Atmospheric Chemistry |
| MCAM | Melanoma Cell Adhesion Molecule |
| EPKR | Electrochem. Polarization Kinetic Reactivation |
| DIP | Document Image Processing |
| PEYS | Photoelectron Yield Spectroscopy |
| MIC | Methyl Isocyanate |
| PPI | Proton Pump Inhibitor |
| CCSC | Charge And Configuration Self-consistency |
| NPL | Nonparametric Linkage |