Is “Polygraph” a Scrabble word?
Yes
POLYGRAPH
Valid in at least one Scrabble dictionary
Valid in these dictionaries
SOWPODS / CSW
Scrabble UK & International
TWL / NWL
Scrabble North America
Large English Dictionary
General English word list
Meaning of Polygraph
noun
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 asked to a subject, in an attempt to detect lies.
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.
Synonyms: autopen, manifold writer, lie detector
verb
1.To administer a polygraph test to.
“The FBI polygraphed the suspect but learned nothing because they already knew he was lying.”