polygraphy

In modern usage, this term is almost exclusively associated with forensic science and the administration of lie detector tests. It carries a clinical, technical connotation, often appearing in legal or law enforcement contexts to describe the methodology of monitoring physiological stress to determine truthfulness.

In a historical or paleographic context, the term refers to the specialized skill of utilizing various scripts or handwriting styles. This sense is rare in contemporary speech and is typically restricted to academic discussions regarding ancient manuscripts or the history of calligraphy.