Frequency: The word is one of the 3000 most common words in English.
1.
A ~ of something is one part of it, considered separately from the rest.
...the poorer ~s of society.
...the third ~ of his journey.
= section
N-COUNT: N of n
2.
A ~ of fruit such as an orange or grapefruit is one of the sections into which it is easily divided.
N-COUNT
3.
A ~ of a circle is one of the two parts into which it is divided when you draw a straight line through it.
N-COUNT: usu N of n
4.
A ~ of a market is one part of it, considered separately from the rest.
Three-to-five day cruises are the fastest-growing ~ of the market...
Women’s tennis is the market leader in a growing market ~–women’s sports.
N-COUNT
5.
If a company ~s a market, it divides it into separate parts, usually in order to improve marketing opportunities. (BUSINESS)
The big six record companies are multinational, and thus can ~ the world market into national ones.
VERB: V n into n