1.
When someone grows up , they gradually change from being a child into being an adult.
She grew up in Tokyo.
PHRASAL VERB : V P
see also grown-up
2.
If you tell someone to grow up , you are telling them to stop behaving in a silly or childish way. ( INFORMAL )
It’s time you grew up.
PHRASAL VERB : usu imper , V P [ disapproval ]
3.
If something grows up , it starts to exist and then becomes larger or more important.
A variety of heavy industries grew up alongside the port.
PHRASAL VERB : V P