Learner's definition of DIVISION
1 : the act or process of dividing something into parts : the way that something is divided
a division of profits into equal shares
Their society has a clear division of labor between men and women. [=in their society, the men do one kind of work and the women do another kind of work]
2 [count] : something that physically divides or separates something else — often + between 3 [noncount], mathematics : the process of finding out how many times one number is contained in another 4 [count] : a group of people who do a particular job within a larger organization (such as a government, business, or school) 5 [count] : a large military group
6 a : a group of teams that form one section of a sports league
b : a group of people who are similar in age, size, etc., and who compete against each other — usually singular
There are five teams in the league's western division.
Both divisions in the league have agreed to the new rules.
teams that are in the first/second division
7 : a situation in which different groups, countries, etc., have different opinions, beliefs, or ways of life that separate them from each other
We're attempting to resolve the divisions [=disagreements] between our two countries.
There were serious divisions within the party on a number of issues.
The book explores the racial and economic divisions in/of our society.
8 [count] : any one of the parts or groups that form something : section