refiner

/rɪˈfaɪnər/
noun
  1. A person, company, or machine that removes impurities from a substance, especially in the production of metals, oil, or sugar.
    • The oil refiner processed thousands of barrels of crude oil each day.
    • As a gold refiner, her job was to purify the metal to 99.9% purity.
    • The sugar refiner used a series of filters to remove impurities from the raw cane juice.
  2. A person or thing that improves something by making it more precise, elegant, or effective.
    • The software's spell-check tool is a useful refiner of written work.
    • She was known as a refiner of teaching methods, always finding ways to make lessons clearer.
    • The editor acted as a refiner of the author's rough draft, polishing the language.
Antonyms
What does "refiner" mean? | whatsthatwordmean | whatsthatwordmean