| 单词 | perturbation |
| 释义 | perturbation —perturbational, adj. /perr'teuhr bay"sheuhn/, n. 1. the act of perturbing. 2. the state of being perturbed. 3. mental disquiet, disturbance, or agitation. 4. a cause of mental disquiet, disturbance, or agitation. 5. Astron. deviation of a celestial body from a regular orbit about its primary, caused by the presence of one or more other bodies that act upon the celestial body. [1325-75; < L perturbation- (s. of perturbatio; see PERTURB, -ATION); r. ME perturbacioun < AF < L, as above] |
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