| Acronym | Meaning |
| PPFD | Photosynthetic Photon Flux D. |
| MUBFF | Modified Urey Bradley Force Field |
| GAIM | Global Analysis Interpretation And Modeling |
| AGR | Advanced Gas-cooled Reactor |
| DQ-RSPT | Double And Quadruple Excitation Diagrams In Rayleigh-Schroedinger Perturbation Theory |
| SWICH | Solid Waste Information Clearinghouse And Hotline |
| CITAC | Cooperation On International Traceability And Analytical Chemistry |
| HIID | Heavy Ion Induced Desorption |
| NAREL | National Air And Radiation Environmental Laboratory |
| CPI | Chemical Patents Index |