concentrator

/ˈkɑnsənˌtreɪtər/
noun
  1. A person who focuses their attention or mental effort on a particular task or subject.
    • She was a natural concentrator, able to block out all distractions.
    • Good concentrators often perform better on difficult tests.
    • As a deep concentrator, he could read for hours without noticing the time.
  2. A device or machine that increases the strength or purity of a substance by removing unwanted parts.
    • The laboratory's concentrator extracted pure ethanol from the mixture.
    • The oxygen concentrator helped the patient breathe more easily at home.
    • Miners use a concentrator to separate valuable ore from waste rock.
Synonyms
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