| Acronym | Meaning |
| RAS | Renin-angiotensin System |
| BCS-CRM | British Chemical Standard-Certified Reference Material |
| IFFD | Intermittently Fed Fill And Draw System |
| MURINES | Muon Ring Neutrino Experiments |
| PSXD | Position Sensitive X-ray Detector |
| PIERS | Polarized Infrared External Reflection Spectroscopy |
| MCTDHF | Multiconfiguration Time-dependent Hartree-Fock |
| AMV | Alfalfa Mosaic Virus |
| SPR | Surface Plasmon Resonance |
| MEMPT | Many-electron Many-photon Theory (in Dynamic-polarizability Calcns. For Atoms And Ions) |