大だい発はっ生せいMeaningsNoun1. explosive increase (in number of pests); (severe) outbreak or upsurge of pestsKanji used大large発let out生lifeComposed of大だいlarge; big; great; huge; vast; major; important; serious; severe; prominent; …Prefix発はっ生せいoccurrence; incidence; outbreak; birth (e.g. of civilization); generation (of power, heat, etc.); production; ontogeny; development; growth; breedingNoun