| Acronym | Meaning |
| UCAR | University Corporation For Atmospheric Research |
| RT | Reverse Transcriptase |
| R-GVB | Resonating-generalized Valence Bond (wave Function) |
| EBIR | Energy Based Integral Retention (in Electronic-structure Calcns.) |
| HREELS | High-resolution Electron Energy-loss Spectroscopy |
| GRIN | Graded Index |
| RAIN | Reactions And Intermediates Network |
| GITT | Galvanostatic Intermittent Titration Technique |
| IRRI | International Rice Research Institute |
| FIRST | Faint Images Of The Radio Sky At Twenty Centimeters |