| Abbreviation | Definition |
|---|---|
| RIP | Read, Interpolate, Plot |
| RK | Runge-Kutta |
| RKC | Runge- Kutta- Chebyshev |
| RKF | Runge–Kutta–Fehlberg |
| RKR | Rydberg-- Klein-- Rees |
| RKS | Rational Krylov Sequence |
| RL | Random Lattice |
| RL | Refinement Logic |
| RLS | Recursive Least Squares |
| RM | Regular Matrix |
| RMA | Rate Monotonic Analysis |
| RMA | Robust Multiple Array |
| RMDF | Random Mid-point Displacement Fractal |
| RME | Realistic Mathematics Education |
| RMO | regional mathematics olympiad |
| RMP | Random Matching Probability |
| RMS | Root Mean Square |
| RMSEA | root mean square error of approximation |
| RN | Random Number |
| RN | Recursive Normalization |