FLU'MINATING, participle present tense 1. Thundering; crackling; exploding; detonating. 2. Hurling papal denunciations, menaces or censures. Fulminating powder, a detonating compound of sulphur, carbonate of potash and niter.
Source: Webster's 1828 American Dictionary ↗ · public-domain · returned verbatim, no AI