Missouri Department of Corrections in the context of "Probation officer"

Parole, also known as provisional release, supervised release, or being on paper, is a form of early release of a prison inmate where the prisoner agrees to abide by behavioral conditions, including checking in with their designated parole officers, or else they may be rearrested and returned to prison. It is important to note that parole is not an additional sentence; rather it is a system that allows inmates to finish their original sentence outside of prison under supervision. In some jurisdictions in the United States, people may shorten their time on parole through earned compliance credits.

Originating from the French word parole ('speech, spoken words' but also 'promise'), the term became associated during the Middle Ages with the release of prisoners who gave their word. This differs greatly from pardon, amnesty or commutation of sentence in that parolees are still considered to be serving their sentences, and may be returned to prison if they violate the conditions of their parole. It is similar to probation, the key difference being that parole is served for the remainder of a prison sentence, while probation can be granted in place of a prison sentence.