Noun

• S: (n) retroversion, retroflection, retroflexion (a turning or tilting backward of an organ or body part) "retroversion of the uterus"
• S: (n) retroversion (translation back into the original language) "the teacher translated Latin texts into English which he gave to his students for retroversion"
• S: (n) regression, regress, reversion, retrogression, retroversion (returning to a former state)