add. ·noun a cinematograph using the arc light.
2. electrograph ·noun a mark, record, or tracing, made by the action of electricity.
3. electrograph ·add. ·noun an image made by the rontgen rays; a sciagraph.
4. electrograph ·add. ·noun an apparatus, controlled by electric devices, used to trace designs for etching.
5. electrograph ·add. ·noun an instrument for the reproduction at a distance of pictures, maps, ·etc., by means of electricity.