#1 explosion n. [detonation, blowup] a violent release of energy caused by a chemical or nuclear reaction. wn
#2 explosion n. [burst] the act of exploding or bursting; "the explosion of the firecrackers awoke the children"; "the burst of an atom bomb creates enormous radiation aloft". wn
#3 explosion n. a sudden great increase; "the population explosion"; "the information explosion". wn
#4 explosion n. the noise caused by an explosion; "the explosion was heard a mile away". wn
#5 explosion n. [plosion] the terminal forced release of pressure built up during the occlusive phase of a stop consonant. wn
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