1
- directed or moving backwards向后的, 后退的：
a retrograde flow.
回流。
1.1
- reverting to an earlier and inferior condition倒退的, 退化的：
to go back on the progress that has been made would be a retrograde step.
在已经取得的进步基础上后退, 将是一种退步。
1.2
- (of the order of something) reversed; inverse（顺序）逆序的, 颠倒的：
the retrograde form of these inscriptions.
这些铭文的逆序书写形式。
1.3
- (of amnesia) involving the period immediately preceding the causal event（健忘症）逆行性的。
1.4
- Geology (of a metamorphic change) resulting from a decrease in temperature or pressure【地质】（变质作用）逆向的。
1.5
- Astronomy & Astrology (of the apparent motion of a planet) in a reverse direction from normal (from east to west), resulting from the relative orbital progress of the earth and the planet.【天文, 占星】（行星的视运动）逆行的。PROGRADE的反义词。
1.6
- Astronomy (of the orbit or rotation of a planet or planetary satellite) in a reverse direction from that normal in the solar system【天文】（行星或其卫星的轨道运行或自转）逆行的。
- rare a degenerate person〈罕〉堕落的人。
no obj.
1
- archaic go back in position or time〈古〉向后移动, 后退; 退回（到从前）：
our history must retrograde for the space of a few pages.
我们的历史得倒退几页谈谈。
1.1
- revert to an earlier and usually inferior condition倒退, 退化：
people cannot habitually trample on law and justice without retrograding toward barbarism.
人们如果经常践踏法律和正义就会向野蛮状态倒退。
2
- Astronomy show retrogradation【天文】出现逆行现象：
all the planets will at some time appear to retrograde.
所有的行星在某些时候都会看起来在逆行。
派生词
retrogradely
adverb （rare 〈罕〉）词源
late Middle English (as a term in astronomy)： from Latin retrogradus, from retro 'backwards' + gradus 'step' （from gradi 'to walk'）.