The Collaborative International Dictionary
Keraunograph
Keraunograph \Ke*rau"no*graph\, n. [Gr. ? thunderbolt + graph.] A figure or picture impressed by lightning upon the human body or elsewhere. -- Ker`au*nog"ra*phy, n.
Wiktionary
keraunograph
n. (context archaic English) A figure or picture impressed by lightning upon the human body or elsewhere.