Lichtenberg figure

Etymology
Named after the German physicist.

Noun

 * 1)  A branching pattern on the surface of an insulator that has been subject to an electric discharge
 * Lichtenberg figures are often seen on the skin of a person who has been struck by lightning.
 * Lichtenberg figures are often seen on the skin of a person who has been struck by lightning.

Translations

 * Portuguese: figura de Lichtenberg