polygraphy Meaning, Definition & Usage

Po*lyg"ra*phy noun
Etymology
Gr. much + to write: cf. F. polygraphie.
Definitions
  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