| Acronym | Meaning |
| FMO | Floating Molecular Orbital |
| MERT | Medical Emergency Response Team |
| RCCSD | (spin) Restricted CCSD |
| PDM3.1 | Probabilistic Dilution Model Version 3.1 |
| ICHAZ | Intercritical Heat-affected Zone |
| PPD | Purified Protein Derivative |
| IBIL | Ion Beam Induced Luminescence |
| J(Z)CCS | J(z) Conserving Centrifugal Sudden Approximation (in Molecular Collisions |
| BDD | Boron-doped Diamond |
| DIBS | Dual Ion Beam Sputtering |