fulminating, a.
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Thundering; exploding in a peculiarly sudden or violent manner. [1913 Webster]
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Hurling denunciations, menaces, or censures. [1913 Webster]
Fulminating oil, nitroglycerin. -- Fulminating powder (Chem.) any violently explosive powder, but especially one of the fulminates, as mercuric fulminate.