# polygraph

> English word · Noun · IPA /ˈpɒliɡɹæf/ · frequency rank #38,105

## Definitions
1. 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.
2. A mechanical instrument for multiplying copies of a writing, resembling multiple pantographs.
3. A collection of different works, either by one or several authors.
4. A group of letters that represent a single phoneme.
5. Any group of letters treated as a single item.
6. An author who writes on many subjects.
7. A multidimensional directed graph.

## Etymology
From poly- + -graph.

## Common misspellings (15)
`oplygraph`, `ploygraph`, `polgyraph`, `pollygraph`, `polygarph`, `polyggraph`, `polygrahp`, `polygraphh`, `polygrapph`, `polygrpah`, `polygrraph`, `polyrgaph`, `polyygraph`, `poylgraph`, `ppolygraph`

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-05-06.
Canonical page: https://plainspell.com/en/word/polygraph