polygraph
🇺🇸
/ˈpɑːliɡræf/
🇬🇧
/ˈpɒliɡrɑːf/
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.
容疑者は、無実を証明するためにポリグラフ検査にかけられるよう要求されました。