reformer

nouns

a disputant who advocates reform
crusader, meliorist, reformer, reformist, social reformer
is derived from
reform
an apparatus that reforms the molecular structure of hydrocarbons to produce richer fuel
"a catalytic reformer"
reformer
is derived from
reform
is a part of
a refinery for petroleum
oil refinery, petroleum refinery
is a type of (narrower)
equipment designed to serve a specific function
apparatus, setup