発生 (はっせい)outbreak; spring forth; occurrence

outbreak; spring forth; occurrencenoun (common) (futsuumeishi), noun or participle which takes the aux. verb suru
generation (e.g. of power or heat); genesis; originnoun (common) (futsuumeishi), noun or participle which takes the aux. verb suru
ontogeny; development of complex multicellular structures from cell(s) in a simple statenoun (common) (futsuumeishi), noun or participle which takes the aux. verb suru

発生, its kanji, and other words that share them.Open this graph

Kanji in 発生

発言はつげんstatement; remark
開発かいはつdevelopment; exploitation
反発はんぱつopposition; rebellion
発展はってんdevelopment; growth
発行はっこうpublication; issue (of journal, newspaper, etc.)
発表はっぴょうannouncement; publication
先発せんぱつstarting in advance; starting first
原発げんぱつnuclear power plant; nuclear power generation
学生がくせいstudent (esp. a university student)
生活せいかつliving; life (one's daily existence)
生産せいさんproduction; manufacture
人生じんせい(human) life (i.e. conception to death)
先生せんせいteacher; instructor
厚生省こうせいしょうMinistry of Health and Welfare (now Ministry of Health, Labour and Welfare)
年生ねんせいpupil in ... year; student in ... year
新生しんせいrebirth; new birth

See how 発生 connects to the rest of Japanese.