| Acronym | Meaning |
| OVC | Optimized Valence Configuration |
| WDM | Wavelength Division Multiplexing |
| SLA | Special Libraries Association |
| THGF | Trigonometric Hermite Gaussian Function |
| LOPAIR | Long Path Infrared |
| HBT | Hanbury Brown Twiss (interferometry) |
| VCC-IOS | Vibrational Close-coupling-(rotational) Infinite-order Sudden (for Inelastic Mol. Collisions Calcns.) |
| FHNC | Fermi Hypernetted Chain Method (in Quantum Statistics) |
| NIOSH | National Institute For Occupational Safety And Health |
| ALOMAR | Arctic Lidar Observatory For Middle Atm. Research |