polygraph
🇺🇸
/ˈpɑːliɡræf/
🇬🇧
/ˈpɒliɡrɑːf/
noun
R
A lie detector is a machine that helps find out if someone is telling the truth or not, often used by police.
The suspect was asked to take a polygraph test to verify his innocence.
translation
A lie detector is a machine that helps find out if someone is telling the truth or not, often used by police.
Word Forms
Plural
polygraphs