1. people who operate polygraph machines (lie detectors) to conduct tests
2. people who write in multiple languages or scripts
Usage: rare; historical

Examples

• The police department hired three experienced polygraphers for the investigation.
• Polygraphers must complete extensive training before they can administer lie detector tests.
• The company’s polygraphers work with law enforcement agencies nationwide.
• Medieval polygraphers created manuscripts in Latin, Greek, and Arabic.
• Professional polygraphers interpret the results of physiological measurements during questioning.
• The court questioned the reliability of evidence provided by polygraphers.