1. administering or conducting a polygraph test (lie detector test) on someone
Usage: present participle of polygraph; commonly used in law enforcement and security contexts

Examples

• The detective was polygraphing the suspect to verify his alibi.
• Polygraphing job applicants is a standard procedure at the agency.
• They spent hours polygraphing witnesses to the crime.
• The examiner began polygraphing the employee as part of the security clearance process.
• Federal agents are polygraphing all the candidates for the classified position.