explosive UK /ɛkˈspləʊsɪv/US /ɛkˈsploʊsɪv/adjective 7noun 2forms 3 adjective7 •able to break apart suddenly with great force and a loud noise •Of a specific cellular automaton rule, tending to exhibit infinite and unpredictable growth when starting from finite random patterns.Notes: A rule set that (very probably) results in explosive growth; certainly in area if not population. — 1992 •(figurative) Rapidly accelerating. •(figurative) Shocking; startling. •Easily driven to anger, usually with reference to a person.He has an explosive personality. •Having the character of an explosion. •(no longer used) Synonym of plosive. noun2 •Any explosive substance. •(old-fashioned) A plosive.The words of these songs were either without meaning, or derived from an idiom with which Watt, a very fair linguist, had no acquaintance. The open a sound was predominant, and the explosives k and g. — 1953 formsexplosives · more explosive · most explosive