[ noun ] a photographic image produced on a radiosensitive surface by radiation other than visible light (especially by X-rays or gamma rays) <noun.artifact>
Skiagraph \Ski"a*graph\, n. Skiagraphy \Ski*ag"ra*phy\, n., etc. See {Sciagraph}, {Sciagraphy}, etc. [Webster 1913 Suppl.]
Sciagraph \Sci"a*graph\, n. [See {Sciagraphy}.] 1. (Arch.) An old term for a vertical section of a building; -- called also {sciagraphy}. See {Vertical section}, under {Section}.
2. (Phys.) A radiograph. [Written also {skiagraph}.]