retroversion

(noun) a turning or tilting backward of an organ or body part. Synonyms: retroflection, retroflexion. Example: "Retroversion of the uterus."

(noun) translation back into the original language. Example: "The teacher translated latin texts into english which he gave to his students for retroversion."

(noun) returning to a former state. Synonyms: regression, regress, reversion, retrogression.