| Acronym | Meaning |
| NRD | Natural Resource Damage |
| E2PROM | Electrically Erasable Programmable Read Only Memory |
| PPLN | Periodically Poled Lithium Niobate |
| RSR | Rapid Solidification Rate |
| RPV | Reactor Pressure Vessel |
| EOLM | Electro-optical Light Modulation |
| POPW | Partially Orthogonalized Plane Wave |
| ORU | In Orbit Replaceable Unit (spacecraft) |
| NERD | Neutron Elastic Recoil Detection |
| AWM | Abrasive Waterjet Machining |