| Acronym | Meaning |
| APAR | Absorbed Photosynthetically Active Radiation |
| EBCT | Empty Bed Contact Time |
| PSCE | Partially Spin Coupled Echo |
| ERCP | Endoscopic Retrograde Cholangiopancreatography |
| PZEV | Partial Zero Emission Vehicle |
| LCLS | Linac Coherent Light Source |
| UCCSD | (spin) Unrestricted CCSD |
| OECD/SIDS | Organisation For Economic Co-operation And Developments Screening Information Data Sets |
| TDGC/MS | Thermal Desorption Gas Chromatography/mass Spectrometry |
| SCLCP | Side-chain Liquid-crystalline Polymer |