D defs.my
Entry 3 senses Webster, 1913

Polygraphy

· Po·lyg·ra·phy · IPA
01 n. Much writing; writing of many books.
  1. 1.
    Much writing; writing of many books.[Obs.]
  2. 2.
    The art of writing in various ciphers, and of deciphering the same.[R.]
  3. 3.
    The art or practice of using a polygraph.