reformer
/ˈrɛfɔrmər/Definitions
1. noun
A person who advocates or works for reform, especially in a particular area or institution.
“The politician was seen as a reformer who aimed to bring about positive change in the healthcare system.”
2. verb
To make or become something that is improved or reformed.
“The new law will reform the way companies handle employee benefits.”
3. noun
A device or machine that converts energy or changes the form of something.
“The engine was a reformer that converted the chemical energy of the fuel into mechanical energy.”