A Treatment

1. The process or manner of treating someone or something.
2. Medical care for an illness or injury.
3. The use of a substance or process to preserve or give particular properties to something.
4. (countable) A treatise; a formal written description or characterization of a subject.
5. (countable, film) A brief, third-person, present-tense summary of a proposed film.
6. (obsolete) entertainment; treat