Ful"gu*ra`tion (?), n. [L. fulguratio: cf. F. fulguration.]
1.
The act of lightening.
[R.]
Donne.
2. Assaying
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.
© Webster 1913.