A person who makes changes to something in order to improve it. The reformer worked tirelessly to improve the education system.
A device used in industrial processes to convert hydrocarbons into different forms, often used in the production of hydrogen. The chemical plant installed a new reformer to increase hydrogen production.
A piece of Pilates apparatus consisting of a moving carriage, springs, and pulleys, used to perform resistance exercises. She did her Pilates session on the reformer to strengthen her core.