化生 is read as かせい (kasei) and means growth.
かせい
kasei
せいかがく
biochemistry
えいせいかがく
hygienic chemistry
せいめいほけんぶんかせんたー
Japan Institute of Life Insurance
せいぶつかがくへいき
biological and chemical weapons
せいぶつかがくてきさんそようきゅうりょう
biochemical oxygen demand
かがく
chemistry
ばけもの
goblin
かせき
fossil
ばける
to disguise oneself as
かす
to influence
かごう
chemical combination
かごうぶつ
compound