a. (Med.) Resembling lightning; -- used to describe intense lancinating pains accompanying locomotor ataxy. [ 1913 Webster ]

‖n. [ NL. ] (Electricity) A spectro-electric tube in which the decomposition of a liquid by the passage of an electric spark is observed. Knight. [ 1913 Webster ]

v. i. [ L. fulguratus, p. p. of fulgurare to flash, fr. fulgur lightning, fr. fulgere to shine. See Fulgent. ] To flash as lightning. [ R. ] [ 1913 Webster ]

n. [ L. fulguratio: cf. F. fulguration. ] 1. The act of lightening. [ R. ] Donne. [ 1913 Webster ]

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. [ 1913 Webster ]

A phenomenon called, by the old chemists, fulguration. Ure. [ 1913 Webster ]