Pronunciation

change
  • IPA (key): /ˈpɒliɡræf/ or /ˈpɒliɡrɑːf/
  • (file)

Singular
polygraph

Plural
polygraphs

  1. (countable) A polygraph is a device that is used to detect lies.

Plain form
polygraph

Third-person singular
polygraphs

Past tense
polygraphed

Past participle
polygraphed

Present participle
polygraphing

  1. (transitive) If you polygraph someone, you put them through a polygraph.