Polygraph
Pronunciation: /ˈpɑːˌliːɡˌræf/
Polygraph (noun)
- a machine that measures body responses to check if someone is lying.
- an old device used to make copies of written documents.
Examples
- The polygraph indicated that the suspect was telling the truth.
- She was nervous about taking the polygraph test.
Common collocations: take a polygraph, polygraph test, pass the polygraph, operate a polygraph, polygraph machine