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From The Collaborative International Dictionary of English v.0.48:
Explosive \Ex*plo"sive\, n. 1. An explosive agent; a compound or mixture susceptible of a rapid chemical reaction, as gunpowder, TNT, dynamite, or nitro-glycerine. [1913 Webster +PJC] 2. A sound produced by an explosive impulse of the breath; (Phonetics) one of consonants p, b, t, d, k, g, which are sounded with a sort of explosive power of voice. Note: [See Guide to Pronunciation, [root] 155-7, 184.] [1913 Webster]