1. The process or manner of treating someone or something.
    He still has nightmares resulting from the treatment he received from his captors.
  2. Medical care for an illness or injury.
    A treatment or cure is applied after a medical problem has already started.
    Cancer survivors who got radiation treatments as children have nearly twice the risk of developing diabetes as adults.
    The change is due largely to the increased availability of antiretroviral treatment.
  3. The use of a substance or process to preserve or give particular properties to something.
  4. A treatise; a formal written description or characterization of a subject.
  5. A brief, third-person, present-tense summary of a proposed film.
  6. entertainment; treat

The above text is a snippet from Wiktionary: treatment
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