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The Collaborative International Dictionary
Polygraphy

Polygraphy \Po*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.

Wiktionary
polygraphy

n. 1 Much writing; writing of many books. 2 The art of writing in various ciphers, and of deciphering the same. 3 The art or practice of using a polygraph.

Usage examples of "polygraphy".

Ron Reynolds, a University of San Francisco psychology professor trained in polygraphy, and the man who administered the test, agreed with Hardy.