| Acronym | Meaning |
| TOD | Total Oxygen Demand |
| MCV | Mesoscale Convective Vortex |
| RCR | Replication-competent Retrovirus |
| UNECE | United Nations Economic Commission For Europe |
| PPQ | Parts Per Quadrillion |
| LPFG | Long-period Fiber Grating |
| SCA-QD-MBPT | Self-consistently Adapted (core Reference State) Quasidegenerate Many-body Perturbation Theory |
| NISTO | Non-integer Slater-type Orbital |
| CCS | Contract Compliance Screening |
| ADMR | Absorption Detected Magnetic Resonance |