One who effects a reformation or amendment; one who labors for, or urges, reform; as, a reformer of manners, or of abuses.
- One who reforms, or who works for reform.
- One who was involved in the Reformation.
- A device which converts hydrocarbons into a hydrogen-rich mixture of gases.
- A device used to convert petroleum refinery naphthas, typically having low octane ratings, into high-octane liquid products called reformates.