It looks like some spawn between diptych and triptych, perhaps a bad typing of pictorial, or district, or jaundiced, or dielectric, or diacritic, or . . .
The correct term is Dictico, or perhaps triptych. Anyway it refers to informational or propaganda leaflets. Dictico refers to the two leaves or a single fold brochure. The triptych is the it with three sheets or that it has two folds.