Fulguration
Pronunciation : Ful"gu*ra`tion
Part of Speech : n.
Etymology : [L. fulguratio: cf. F. fulguration.]
Definition : 1. The act of lightening. [R.] Donne.
2. (Assaying)
Defn: The sudden brightening of a fused globule of gold or silver, when the last film of the oxide of lead or copper leaves its surface; -- also called blick. A phenomenon called, by the old chemists, fulguration. Ure.
Source : Webster's Unabridged Dictionary, 1913