| Acronym | Meaning |
| RITD | Resonant Interband Tunneling Diode |
| EAR | European Asthenospheric Reservoir (mantle Source For Tertiary-Quaternary Volcanism) |
| AIPA | American Inventors Protection Act |
| DCXRD | Double Crystal X-ray Diffraction |
| DISI | Direct-injection Spark-ignition |
| HENA | High-energy Neutral Atom |
| DTL | Drift Tube Linac |
| MARS | Multivariate Adaptive Regression Splines |
| BDE | Bond Dissociation Energy |
| NRA | National Rivers Authority (UK) |