| Abbreviation | Definition |
|---|---|
| RS | Rotation Spin |
| RSAP | Research Scholars Association of Physics |
| RSD | Response Surface Design |
| RSM | Regional Spectral Model |
| RSM | Response Surface Method |
| RSP | Rapid Solidification Process |
| RSPS | Rochester Symposium for Physics Students |
| RST | Rapid Suspension Technology |
| RST | Rotation, Stretch, and Translation |
| RSVP | Rare Symmetry Violating Process |
| RT | Ray Tracing |
| RT | Reference Time |
| RT | Reverberation Time |
| RTA | Reactivity Test Assembly |
| RTBT | Ring to Target Beam Transport |
| RTI | Relative To the Input |
| RTL | Rotary To Linear |
| RTP | Real-Time Physics |
| RTPC | Radial Time Projection Chamber |
| RTPS | Reflective Type Phase Shifter |