| Acronym | Meaning |
| ISRA | Image-space Reconstruction Algorithm |
| XEAES | X-ray Excited Auger Electron Spectroscopy |
| MECA | Molecular Emission Cavity Analysis |
| J(Z)CCS | J(z) Conserving Centrifugal Sudden Approximation (in Molecular Collisions |
| R&D | Research And Development |
| LAOS | Light Amplifying Optical Switch |
| SCM | Subsurface Chlorophyll Maximum |
| MTES | Metastable Transfer Emission Spectroscopy |
| MRS | Minimum Required Strength |
| ETL | Electron Transport Layer |