| Acronym | Meaning |
| ECCLS | European Committee For Clinical Laboratory Standards |
| IRES | Infrared Emission Spectroscopy |
| ESPS | Electrode-separated Piezoelectric Sensor |
| IEH | Intermediate Effective Hamiltonian |
| EHSO | Environmental Health And Safety Online |
| SIR-C | Spaceborne Imaging Radar-C |
| DCTP | Direct-current Tast Polarography |
| VARTM | Vacuum Assisted Resin Transfer Molding |
| SPLEED | Spin Polarized Low-energy Electron Diffraction |
| QIOS | Quantum Infinite-order Sudden (method For Collisions) |