Science. Deceleration or reduction in velocity; spec. the slowing of the motion of a planet or satellite along part of its orbit; an instance of this.
| 单词 | θ248 |
| 释义 | the world > the universe > heavenly body > movement of heavenly bodies > [noun] > retardation (1) retardationa1475 Science. Deceleration or reduction in velocity; spec. the slowing of the motion of a planet or satellite along part of its orbit; an instance of this. |
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