| # | Concept | Culture | Statement | Freq. |
|---|---|---|---|---|
| 1 | perturbation | physics | In astronomy and physics, perturbation refers to the small changes in the motion of a celestial body caused by the gravitational attraction of another body. | 1 |
| 2 | perturbation | physics community | Commonly used in the study of dynamical systems and celestial mechanics to describe small changes or disturbances in a system. | 1 |