fulminating powder

from The Collaborative International Dictionary of English v.0.48

Fulminating \Ful"mi*na"ting\, a.
   1. Thundering; exploding in a peculiarly sudden or violent
      manner.
      [1913 Webster]

   2. Hurling denunciations, menaces, or censures.
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   {Fulminating oil}, nitroglycerin.

   {Fulminating powder} (Chem.) any violently explosive powder,
      but especially one of the fulminates, as mercuric
      fulminate.
      [1913 Webster]