Definition

A person who is trained to use a device that measures physiological responses to determine if someone is being truthful or deceptive.

Example

The polygrapher analyzed the results of the lie detector test to assess the subject's honesty.

Conversation

Have you ever met a polygrapher?

No, I haven't! What do they do exactly?

They operate lie detectors, measuring things like heart rate and breathing.

That sounds fascinating! I wonder how accurate they really are.

Synonyms & Antonyms

Root Explanation

Polygrapher → It is formed from "poly-" (from Greek "polus", meaning many) and "grapho" (from Greek "grapho", meaning to write). A polygrapher is someone who writes or records many things, often referring to a person who uses a polygraph to measure physiological responses.

Memory Tip

Think of 'many' ('poly-') writings or recordings ('grapho') — that's why a polygrapher is someone who deals with many forms of writing or recording.

Visually Confused Words