1. 后倾：retroversioflexion 后倾后屈 | retroversion 后倾 | retrusion 下颌后移
2. 回退：retrousse 向上翻的 | retroversion 回退 | retrovert 向后弯曲
3. 子宫后倾：退化 retrogression | 子宫后倾 retroversion | 再接种(疫苗) revaccination
4. 后倾 倒退 子宫后倾：retroversioflexion 后倾后屈 | retroversion 后倾 倒退 子宫后倾 | retroversionoftestis 睾丸后倾
noun
1. returning to a former state
Synonym: regression regress reversion retrogression
2. translation back into the original language
e.g. the teacher translated Latin texts into English which he gave to his students for retroversion
3. a turning or tilting backward of an organ or body part
e.g. retroversion of the uterus
Synonym: retroflection retroflexion