1. An instrument for multiplying copies of a writing; a collection of different works.

Nuttall's Standard dictionary of the English language By Nuttall, P.Austin

• polygrapgh,
• potograph,
• ploygraph,
• polygraphy,
• poloygraph,
• oolygraph,
• lolygraph,
• -olygraph,
• 0olygraph,
• pilygraph,
• pklygraph,
• pllygraph,
• pplygraph,
• p0lygraph,
• plygraph,
• podygraph,
• poligraph,
• palograph,
• Polycappellary,
• polygramm

The adjective form of the word "polygraph" is "polygraphic".

The plural of the "polygraph" can be the "polygraphs".

The singular of the "polygraph" can be the "polygraph".