a. 1. Thundering; exploding in a peculiarly sudden or violent manner. [ 1913 Webster ]

2. 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. [ 1913 Webster ]