Po*lyg"ra*phy (?), n. [Gr. ; much + to write: cf. F. polygraphie.]
1.
Much writing; writing of many books.
[Obs.]
Fuller.
2.
The art of writing in various ciphers, and of deciphering the same.
[R.]
3.
The art or practice of using a polygraph.
© Webster 1913.