Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English

English definition of “lie detector”

lie detector

noun [C] uk   us  
a piece of equipment used to try to discover if someone is telling lies: Both men refused to take a lie detector test.
Synonym
(Definition of lie detector from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
What is the pronunciation of lie detector?
Add Cambridge dictionaries to your browser to your website

Definitions of “lie detector” in other dictionaries

Translations of “lie detector”

Word of the Day

for starters

used to say that something is the first in a list of things

Word of the Day

Countability – grammar codes

by Dom Glennon​​,
November 26, 2014
Advices and informations Have you ever noticed strange codes in square brackets on entries in Cambridge Dictionaries Online and wondered what they mean? These are grammar codes, giving you a brief summary of how that word behaves grammatically. More information can be obtained by hovering your cursor over the code, and there’s

Read More 

ped-text verb

November 24, 2014
to text someone while walking I’m ped-texting, I’m looking down at my phone, 75 percent of the time.

Read More