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| Subject | English | Thesaurus |
| mil., abbr. | Defense Red Switched Program | DRSP |
| abbr., scottish | Infra-Red Analysis Measurements & Modeling Program | IRAMMP (US Navy) |
| abbr., scottish | Infra-red Chemistry Experiments, Co-ordinated Auroral Program | ICE CAP (USA) |
| abbr., scottish | Infra-Red Missile Warning Subsystem programme | IRMWS (USA) |
| abbr. | Intensity Red Green Blue | IRGB (Vosoni) |
| abbr. | Junior Red Cross | JRC |
| tech. | RED CAP | real-time electromagnetic digitally controlled analyzer and processor simulator |
| energ.ind. | red hydrogen | nuclear hydrogen (MichaelBurov) |
| energ.ind. | red hydrogen | pink hydrogen (MichaelBurov) |
| abbr., scottish | Silicon Hybrids with Infra-red Extrinsic Long wavelength Detectory programme | SHIELD (USAF) |