What is Operate ?
Operate is (verb) 1. to make something work He knows how to operate the machine. She is learning how to operate the new telephone switchboard. 2. to do business They operate in a different way from us. 3. to treat a patient by cutting open the body She was operated on by Mr Jones. The surgeon decided she would have to operate on the patient.
source: Easier English, Student Dictionary Upper Intermediate Level