noun
released prisoner; ex-convict
Formal legal term for a person who has been released after serving a full prison sentence. Used in official contexts.
満期釈放者に対する社会復帰支援が重要だ。
Rehabilitation support for released prisoners is important.
彼は満期釈放者として新たな人生を歩み始めた。
He started a new life as an ex-convict.
Compound of 満期 (expiration of term) + 釈放 (release) + 者 (person). The exact historical derivation is uncertain, but the term is a straightforward legal compound.