What is the meaning of division?

noun

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