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