Meaning of “treatment” - Learner’s Dictionary

treatment

noun uk us /ˈtriːtmənt/
MEDICAL [ C, U ]

B2 something that you do to try to cure an illness or injury, especially something suggested or done by a doctor:

She's receiving treatment for a lung infection.
DEAL WITH [ U ]

B2 the way you deal with or behave towards someone or something:

There have been complaints about the treatment of prisoners.

(Definition of “treatment” from the Cambridge Learner’s Dictionary © Cambridge University Press)