POLYGRAPH


Meaning of POLYGRAPH in English

pol ‧ y ‧ graph /ˈpɒlɪɡrɑːf $ ˈpɑːlɪɡræf/ BrE AmE noun [countable]

a piece of equipment that is used by the police to find out whether someone is telling the truth SYN lie detector :

The suspect was given a polygraph test.

Longman Dictionary of Contemporary English.      Longman - Словарь современного английского языка.