| Acronym | Meaning |
| LOPAIR | Long Path Infrared |
| NODA | Notice Of Data Availability |
| MAG | Metal Arc Gas (welding) |
| FRC | Frozen Core Approxn. |
| FOISD | Fiber Optic Isolated Spherical Dipole Antenna |
| WKB | Wentzel-Kramers-Brillouin (phase-shift Formula For Potential Scattering) |
| XBIS | X-ray Bremsstrahlung Isochromat Spectroscopy |
| WHV | Woodchuck Hepatitis Virus |
| DEMA | Distributed Electromechanical Actuator |
| EI | Emissions Inventory |