polygraph
noun/ˈpɒliɡrɑːf/
/ˈpɑːliɡræf/
(specialist)- a lie detector (= a piece of equipment that is used, for example by the police, to find out if somebody is telling the truth)Topics Crime and punishmentc2
Definitions on the go
Look up any word in the dictionary offline, anytime, anywhere with the Oxford Advanced Learner’s Dictionary app.
Check pronunciation:
polygraph