Definition of lie detector in English:
An instrument for determining whether a person is telling the truth by testing for physiological changes considered to be associated with lying. Compare with polygraph.
- This, to Lily at least, sounded like a good enough answer, one that would definitely qualify under the lie-detector test as the truth.
- While NSA officials call the lie detector test a useful tool, it is clearly not perfect.
- Jack questions Greg at every turn, even going so far as to subject him to a lie-detector test and monitoring his every move with hidden surveillance cameras.
Definition of lie detector in:
- British & World English dictionary
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