水すい素そ爆ばく発はつすいそばくはつMeanings1nounhydrogen explosionTechnical term for an explosion caused by hydrogen gas, often used in contexts such as nuclear accidents or chemical plant incidents.福ふく島しま第だい一いち原げん発ぱつでは、水すい素そ爆ばく発はつが建たて屋やを