| Acronym | Meaning |
| AFRL | Air Force Research Laboratory |
| TPA | Two-photon Absorption |
| CCRM | Coupled-channel Reactance Matrix (in Atom Surface Scattering) |
| GHD | Growth Hormone Deficiency |
| ASA | Acrylonitrile-styrene-acrylate Terpolymer |
| TNLCD | Twisted Nematic Liquid Crystal Display |
| XRF | X-ray Fluorescence |
| FFM | Friction Force Microscopy |
| CAG | Continental-arc Granitoids |
| PDPA | Phase Doppler Particle Analyzer |