Nouns

(n)divisionan army unit large enough to sustain combat“two infantry divisions were held in reserve”
(n)part, section, divisionone of the portions into which something is regarded as divided and which together constitute a whole“the written part of the exam”, “the finance section of the company”, “the BBC's engineering division”
(n)divisionthe act or process of dividing
(n)divisionan administrative unit in government or business
(n)division, variancediscord that splits a group
(n)class, divisiona league ranked by quality“he played baseball in class D for two years”, “Princeton is in the NCAA Division 1-AA”
(n)division(biology) a group of organisms forming a subdivision of a larger category
(n)division(botany) taxonomic unit of plants corresponding to a phylum
(n)division, air divisiona unit of the United States Air Force usually comprising two or more wings
(n)division, naval divisiona group of ships of similar type
(n)divisionan arithmetic operation that is the inverse of multiplication; the quotient of two numbers is computed
(n)division, partition, partitioning, segmentation, sectionalization, sectionalisationthe act of dividing or partitioning; separation by the creation of a boundary that divides or keeps apart