PolygraphyPo*lyg"ra*phy\, n. [Gr. ?; poly`s much + gra`fein 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.