Definition

Relating to or involving the use of a polygraph, which is a device that measures physiological responses to determine truthfulness.

Example

The detective used a polygraphic test to assess the suspect's honesty during the interrogation.

Conversation

Have you ever heard of a polygraphic machine?

Yeah, I think it’s used to detect lies, right?

Exactly! It measures physiological responses while asking questions.

That sounds really interesting; I wonder how accurate they are.

Synonyms & Antonyms

Root Explanation

Polygraphic → It is formed from "poly-" (from Greek "polus", meaning many) and "graphic" (from Greek "graphia", meaning writing or drawing). The word "polygraphic" refers to something that involves many forms of writing or drawing.

Memory Tip

Think of 'many' ('poly-') types of 'writing' ('graphic') — that's what polygraphic means.

Visually Confused Words