polygraph
/ˈpɒliɡɹæf/ noun C2- A device which measures and records several physiological variables such as blood pressure, heart rate, respiration and skin conductivity while a series of questions is being posed to a subject, in an attempt to detect deception.
- A mechanical instrument for multiplying copies of a writing, resembling multiple pantographs.
- A group of letters that represent a single phoneme.
- Any group of letters treated as a single item.
- An author who writes on many subjects.
- A multidimensional directed graph.
Plural polygraphs
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