polygraph /ˈpɑːliˌgræf/ Brit /ˈpɒliˌgrɑːf/ noun plural polygraphs
/ˈpɑːliˌgræf/ Brit /ˈpɒliˌgrɑːf/
noun
plural polygraphs
Learner's definition of POLYGRAPH
[count]
2
US : a test that is done with a lie detector to see if someone is telling the truth谎言测试