One who reforms, or who works for reform. / (historical, Christianity) One who was involved in the Reformation.

present participle of reform

reformation / (chemistry) A catalytic process, whereby short-chain molecules are combined to make larger ones; used in the petrochemical industry.

simple past tense and past participle of reform

Corrected; amended; restored to purity or excellence; said, specifically, of the whole body of Protestant churches originating in the Reformation, or, in a more restricted sense, of those who separated from Martin Luther on the doctrine of consubstantiation, etc., and carried the Reformation, as they claimed, to a higher point.

plural of reformer

(historical) The religious movement initiated in the 16th century against the Roman Catholic Church.

plural of reformation

Any of several movements that promote reform

That serves to reform or correct