1 [noncount] : the process of growing: such as
a : natural increase in size
He had a growth spurt when he was 16 years old.
She's concerned that the medication might slow/stunt her child's growth.
— often + of
the growth of facial hair
the growth of a crystal
b : the process of forming or developing something
He discovered a substance that promotes the growth of new blood vessels.
c : an increase in the number, amount, or size of something
The city has undergone explosive growth in recent years.
d : the development of a person's mind, emotions, etc.
He sees his college years as an opportunity for personal growth.
2 : a result or product of growing
It's important to prune the bush every year to encourage new growth.
Their profits have averaged five percent growth in the last four years.
The tree has an average annual growth of almost a foot.
a thick growth of underbrush
3 [count] medical : an abnormal mass of tissue (such as a tumor)
a cancerous growth