To grow up or become an adult; used when people or animals mature with age or experience.
子どもはあっという間に大きくなるね。
Kids grow up so fast, don't they?
大きくなったら何になりたい?
What do you want to be when you grow up?
その町は若者が育って大きくなった。
That town grew as its young people developed.
To increase in size; to grow larger. Used for objects, plants, balloons, or organizations expanding in size or scale.
風船は空気を入れると大きくなる。
The balloon gets bigger when you blow air into it.
会社が順調に成長して大きくなった。
The company prospered and grew larger.
植物は水をやるとだんだん大きくなる。
Plants gradually grow bigger when watered.