| Acronym | Meaning |
| NAMAS | National Measurement Accreditation Service (UK) |
| TDC | Time-to-Digital Converter |
| NAWDEX | National Water Data Exchange |
| EP | Electrostatic Precipitator |
| NSDL | National Science Digital Library |
| SLPI | Secretory Leukocyte Protease Inhibitor |
| HMSA | Hybrid Mean Spherical Approximation |
| TBT | Tributyl Tin |
| PDB | Protein Data Bank |
| EGRIS | Emissive Gamma-ray Imaging And Spectroscopy |