1the action of separating something into parts or the process of being separated:the division of the land into small fields a gene that helps regulate cell division the distribution of something separated into parts:the division of his estates between the two branches of his family [count noun] an instance of members of a legislative body separating into two groups to vote:the new clause was agreed without a division Logic the action of dividing a wider class into two or more subclasses. 2difference or disagreement between two or more groups, typically producing tension:a growing sense of division between north and south [count noun]:a country with ethnic and cultural divisions 3the process of dividing one number by another: no multiplication or division is necessary Mathematics the process of dividing a matrix, vector, or other quantity by another under specific rules to obtain a quotient. 4 [count noun] each of the parts into which something is divided:the main divisions of the book a major section of an organization, with responsibility for a particular area of activity:a retail division a group of army brigades or regiments:an infantry division a number of teams or competitors grouped together in a sport for competitive purposes according to such characteristics as ability or weight:the club will finish second in Division One a part of a county, country, or city defined for administrative or political purposes:a licensing division of a district British a part of a county or borough forming a parliamentary constituency: he was MP for the Lancaster division of North Lancashire Botany a principal taxonomic category that ranks above class and below kingdom, equivalent to the phylum in zoology. Zoology any subsidiary category between major levels of classification.
5 [count noun] a partition:the villagers lived in a communal building and there were no solid divisions between neighbours