| Acronym | Meaning |
| AVCC-IOS | Azimuthal (and) Vibrational Close-coupled (rotational) Infinite Order Sudden |
| RT-PCR | Reverse Transcription-polymerase Chain Reaction |
| MLCK | Myosin Light Chain Kinase |
| CC-CPA | Charge-correlated CPA |
| CGRP | Calcitonin Gene Related Peptide |
| SARS | Scattering And Recoiling Spectrometry |
| BEIS | Biogenic Emissions Inventory System (US EPA) |
| ODR | Optical Double Resonance |
| PWEM | Partial-wave-expansion Method (in Electron Scattering Calcns.) |
| GIWA | Global International Waters Assessment |