Learner's definition of GROWTH
1 [noncount] : the process of growing: such as a : natural increase in size — often + of b : the process of forming or developing something c : an increase in the number, amount, or size of something
d : the development of a person's mind, emotions, etc.
The city has undergone explosive growth in recent years.
the growth of civilization
Children's books are a growth area [=an area of business that is becoming larger and more successful] in the publishing industry.
Children's publishing is a growth industry. [=a business that is becoming larger and more successful]
The company has limited growth potential. [=the company is not likely to grow much larger]
2 : a result or product of growing
3 [count], medical : an abnormal mass of tissue (such as a tumor)