| Acronym | Meaning |
| APT | Attached Proton Test |
| PCP | Photoelectric Charging Of Particles |
| ASPERA | Analyzer Of Space Plasma And Energetic Atoms (Mars Express Spacecraft) |
| ESHRE | European Society For Human Reproduction And Embryolog |
| NOEC | No Observed Effect Concentration |
| BHMF | Black Hole Mass Functionpar |
| MQDT | Multichannel Quantum Defect Theory |
| CERDIP | Ceramic Dual-inline Package |
| EID | Electron Impact Desorption |
| OSRHF | Open-shell Restricted-Hartree-Fock |