division

noun

1. an army unit large enough to sustain combat"two infantry divisions were held in reserve"
2. one of the portions into which something is regarded as divided and which together constitute a whole"the written part of the exam"
3. the act or process of dividing
4. an administrative unit in government or business
5. discord that splits a group
6. a league ranked by quality"he played baseball in class D for two years"
7. (biology) a group of organisms forming a subdivision of a larger category
8. (botany) taxonomic unit of plants corresponding to a phylum
9. a unit of the United States Air Force usually comprising two or more wings
10. a group of ships of similar type
11. an arithmetic operation that is the inverse of multiplication; the quotient of two numbers is computed
12. the act of dividing or partitioning; separation by the creation of a boundary that divides or keeps apart