This noun means correction, reformation, or setting things right—making straight what was crooked. Paul uses it positively for 'reforms' accomplished through Felix's governance (Acts 24:2), while Hebrews uses it for the limitations of old covenant regulations effective only until the time of 'reformation' (9:10). The term suggests systematic improvement or correction of what was wrong or deficient. It shares roots with words for making straight or upright. The Hebrews usage is particularly significant, marking the new covenant era as the time when divine correction and reordering occurs. Spanish 'reformas' and French 'réforme' preserve this sense of restructuring or correcting existing systems.