| Acronym | Meaning |
| RSFQ | Rapid Single Flux Quantum |
| NLDFT | Nonlocal Density Functional Theory |
| PICA | Picosecond Imaging Circuit Analysis |
| RKB | Restricted Kinetic Balance (method In Calcns. Of Wave Functions And Energies) |
| PPIC | Pollution Prevention Information Clearinghouse |
| AU | Absorbance Units |
| GPS | Generalized Phase Shift Formalism |
| AWG | Arrayed Waveguide Grating |
| GERM | Geochem. Earth Ref. Model |
| EQO | Environmental Quality Objective |